blob: cb281f27b0f691475678b3c8e31dc9d874c6bba1 [file] [log] [blame]
Elliott Hughes2faa5f12012-01-30 14:42:07 -08001/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
Elliott Hughes11e45072011-08-16 17:40:46 -070016
Elliott Hughes42ee1422011-09-06 12:33:32 -070017#include "utils.h"
18
Christopher Ferris943af7d2014-01-16 12:41:46 -080019#include <inttypes.h>
Elliott Hughes92b3b562011-09-08 16:32:26 -070020#include <pthread.h>
Brian Carlstroma9f19782011-10-13 00:14:47 -070021#include <sys/stat.h>
Elliott Hughes42ee1422011-09-06 12:33:32 -070022#include <sys/syscall.h>
23#include <sys/types.h>
Brian Carlstrom4cf5e572014-02-25 11:47:48 -080024#include <sys/wait.h>
Elliott Hughes42ee1422011-09-06 12:33:32 -070025#include <unistd.h>
Ian Rogers700a4022014-05-19 16:49:03 -070026#include <memory>
Elliott Hughes42ee1422011-09-06 12:33:32 -070027
Brian Carlstrom6449c622014-02-10 23:48:36 -080028#include "base/stl_util.h"
Elliott Hughes76160052012-12-12 16:31:20 -080029#include "base/unix_file/fd_file.h"
Ian Rogers4f6ad8a2013-03-18 15:27:28 -070030#include "dex_file-inl.h"
Ian Rogers22d5e732014-07-15 22:23:51 -070031#include "field_helper.h"
Brian Carlstromea46f952013-07-30 01:26:50 -070032#include "mirror/art_field-inl.h"
33#include "mirror/art_method-inl.h"
Ian Rogers4f6ad8a2013-03-18 15:27:28 -070034#include "mirror/class-inl.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080035#include "mirror/class_loader.h"
Ian Rogers2dd0e2c2013-01-24 12:42:14 -080036#include "mirror/object-inl.h"
37#include "mirror/object_array-inl.h"
38#include "mirror/string.h"
buzbeec143c552011-08-20 17:38:58 -070039#include "os.h"
Kenny Root067d20f2014-03-05 14:57:21 -080040#include "scoped_thread_state_change.h"
Ian Rogersa6724902013-09-23 09:23:37 -070041#include "utf-inl.h"
Elliott Hughes11e45072011-08-16 17:40:46 -070042
Elliott Hughesad6c9c32012-01-19 17:39:12 -080043#if !defined(HAVE_POSIX_CLOCKS)
44#include <sys/time.h>
45#endif
46
Elliott Hughesdcc24742011-09-07 14:02:44 -070047#if defined(HAVE_PRCTL)
48#include <sys/prctl.h>
49#endif
50
Elliott Hughes4ae722a2012-03-13 11:08:51 -070051#if defined(__APPLE__)
Brian Carlstrom7934ac22013-07-26 10:54:15 -070052#include "AvailabilityMacros.h" // For MAC_OS_X_VERSION_MAX_ALLOWED
Elliott Hughesf1498432012-03-28 19:34:27 -070053#include <sys/syscall.h>
Elliott Hughes4ae722a2012-03-13 11:08:51 -070054#endif
55
Christopher Ferris7b5f0cf2013-11-01 15:18:45 -070056#include <backtrace/Backtrace.h> // For DumpNativeStack.
Elliott Hughes46e251b2012-05-22 15:10:45 -070057
Elliott Hughes058a6de2012-05-24 19:13:02 -070058#if defined(__linux__)
Elliott Hughese1aee692012-01-17 16:40:10 -080059#include <linux/unistd.h>
Elliott Hughese1aee692012-01-17 16:40:10 -080060#endif
61
Elliott Hughes11e45072011-08-16 17:40:46 -070062namespace art {
63
Elliott Hughes11d1b0c2012-01-23 16:57:47 -080064pid_t GetTid() {
Brian Carlstromf3a26412012-08-24 11:06:02 -070065#if defined(__APPLE__)
66 uint64_t owner;
67 CHECK_PTHREAD_CALL(pthread_threadid_np, (NULL, &owner), __FUNCTION__); // Requires Mac OS 10.6
68 return owner;
Elliott Hughes323aa862014-08-20 15:00:04 -070069#elif defined(__BIONIC__)
70 return gettid();
Elliott Hughes11d1b0c2012-01-23 16:57:47 -080071#else
Elliott Hughes11d1b0c2012-01-23 16:57:47 -080072 return syscall(__NR_gettid);
73#endif
74}
75
Elliott Hughes289be852012-06-12 13:57:20 -070076std::string GetThreadName(pid_t tid) {
77 std::string result;
78 if (ReadFileToString(StringPrintf("/proc/self/task/%d/comm", tid), &result)) {
Brian Carlstrom7934ac22013-07-26 10:54:15 -070079 result.resize(result.size() - 1); // Lose the trailing '\n'.
Elliott Hughes289be852012-06-12 13:57:20 -070080 } else {
81 result = "<unknown>";
82 }
83 return result;
84}
85
Elliott Hughes6d3fc562014-08-27 11:47:01 -070086void GetThreadStack(pthread_t thread, void** stack_base, size_t* stack_size, size_t* guard_size) {
Elliott Hughese1884192012-04-23 12:38:15 -070087#if defined(__APPLE__)
Brian Carlstrom29212012013-09-12 22:18:30 -070088 *stack_size = pthread_get_stacksize_np(thread);
Ian Rogers120f1c72012-09-28 17:17:10 -070089 void* stack_addr = pthread_get_stackaddr_np(thread);
Elliott Hughese1884192012-04-23 12:38:15 -070090
91 // Check whether stack_addr is the base or end of the stack.
92 // (On Mac OS 10.7, it's the end.)
93 int stack_variable;
94 if (stack_addr > &stack_variable) {
Brian Carlstrom29212012013-09-12 22:18:30 -070095 *stack_base = reinterpret_cast<byte*>(stack_addr) - *stack_size;
Elliott Hughese1884192012-04-23 12:38:15 -070096 } else {
Brian Carlstrom29212012013-09-12 22:18:30 -070097 *stack_base = stack_addr;
Elliott Hughese1884192012-04-23 12:38:15 -070098 }
Elliott Hughes6d3fc562014-08-27 11:47:01 -070099
100 // This is wrong, but there doesn't seem to be a way to get the actual value on the Mac.
101 pthread_attr_t attributes;
102 CHECK_PTHREAD_CALL(pthread_attr_init, (&attributes), __FUNCTION__);
103 CHECK_PTHREAD_CALL(pthread_attr_getguardsize, (&attributes, guard_size), __FUNCTION__);
104 CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attributes), __FUNCTION__);
Elliott Hughese1884192012-04-23 12:38:15 -0700105#else
106 pthread_attr_t attributes;
Ian Rogers120f1c72012-09-28 17:17:10 -0700107 CHECK_PTHREAD_CALL(pthread_getattr_np, (thread, &attributes), __FUNCTION__);
Brian Carlstrom29212012013-09-12 22:18:30 -0700108 CHECK_PTHREAD_CALL(pthread_attr_getstack, (&attributes, stack_base, stack_size), __FUNCTION__);
Elliott Hughes6d3fc562014-08-27 11:47:01 -0700109 CHECK_PTHREAD_CALL(pthread_attr_getguardsize, (&attributes, guard_size), __FUNCTION__);
Elliott Hughese1884192012-04-23 12:38:15 -0700110 CHECK_PTHREAD_CALL(pthread_attr_destroy, (&attributes), __FUNCTION__);
Elliott Hughes839cc302014-08-28 10:24:44 -0700111
112#if defined(__GLIBC__)
113 // If we're the main thread, check whether we were run with an unlimited stack. In that case,
114 // glibc will have reported a 2GB stack for our 32-bit process, and our stack overflow detection
115 // will be broken because we'll die long before we get close to 2GB.
116 bool is_main_thread = (::art::GetTid() == getpid());
117 if (is_main_thread) {
118 rlimit stack_limit;
119 if (getrlimit(RLIMIT_STACK, &stack_limit) == -1) {
120 PLOG(FATAL) << "getrlimit(RLIMIT_STACK) failed";
121 }
122 if (stack_limit.rlim_cur == RLIM_INFINITY) {
123 size_t old_stack_size = *stack_size;
124
125 // Use the kernel default limit as our size, and adjust the base to match.
126 *stack_size = 8 * MB;
127 *stack_base = reinterpret_cast<uint8_t*>(*stack_base) + (old_stack_size - *stack_size);
128
129 VLOG(threads) << "Limiting unlimited stack (reported as " << PrettySize(old_stack_size) << ")"
130 << " to " << PrettySize(*stack_size)
131 << " with base " << *stack_base;
132 }
133 }
134#endif
135
Elliott Hughese1884192012-04-23 12:38:15 -0700136#endif
137}
138
Elliott Hughesd92bec42011-09-02 17:04:36 -0700139bool ReadFileToString(const std::string& file_name, std::string* result) {
Ian Rogers700a4022014-05-19 16:49:03 -0700140 std::unique_ptr<File> file(new File);
Elliott Hughes76160052012-12-12 16:31:20 -0800141 if (!file->Open(file_name, O_RDONLY)) {
Elliott Hughesd92bec42011-09-02 17:04:36 -0700142 return false;
143 }
buzbeec143c552011-08-20 17:38:58 -0700144
Elliott Hughes3b6baaa2011-10-14 19:13:56 -0700145 std::vector<char> buf(8 * KB);
buzbeec143c552011-08-20 17:38:58 -0700146 while (true) {
Elliott Hughes76160052012-12-12 16:31:20 -0800147 int64_t n = TEMP_FAILURE_RETRY(read(file->Fd(), &buf[0], buf.size()));
Elliott Hughesd92bec42011-09-02 17:04:36 -0700148 if (n == -1) {
149 return false;
buzbeec143c552011-08-20 17:38:58 -0700150 }
Elliott Hughesd92bec42011-09-02 17:04:36 -0700151 if (n == 0) {
152 return true;
153 }
Elliott Hughes3b6baaa2011-10-14 19:13:56 -0700154 result->append(&buf[0], n);
buzbeec143c552011-08-20 17:38:58 -0700155 }
buzbeec143c552011-08-20 17:38:58 -0700156}
157
Elliott Hughese27955c2011-08-26 15:21:24 -0700158std::string GetIsoDate() {
159 time_t now = time(NULL);
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700160 tm tmbuf;
161 tm* ptm = localtime_r(&now, &tmbuf);
Elliott Hughese27955c2011-08-26 15:21:24 -0700162 return StringPrintf("%04d-%02d-%02d %02d:%02d:%02d",
163 ptm->tm_year + 1900, ptm->tm_mon+1, ptm->tm_mday,
164 ptm->tm_hour, ptm->tm_min, ptm->tm_sec);
165}
166
Elliott Hughes7162ad92011-10-27 14:08:42 -0700167uint64_t MilliTime() {
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800168#if defined(HAVE_POSIX_CLOCKS)
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700169 timespec now;
Elliott Hughes7162ad92011-10-27 14:08:42 -0700170 clock_gettime(CLOCK_MONOTONIC, &now);
Ian Rogers0f678472014-03-10 16:18:37 -0700171 return static_cast<uint64_t>(now.tv_sec) * UINT64_C(1000) + now.tv_nsec / UINT64_C(1000000);
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800172#else
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700173 timeval now;
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800174 gettimeofday(&now, NULL);
Ian Rogers0f678472014-03-10 16:18:37 -0700175 return static_cast<uint64_t>(now.tv_sec) * UINT64_C(1000) + now.tv_usec / UINT64_C(1000);
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800176#endif
Elliott Hughes7162ad92011-10-27 14:08:42 -0700177}
178
jeffhaoa9ef3fd2011-12-13 18:33:43 -0800179uint64_t MicroTime() {
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800180#if defined(HAVE_POSIX_CLOCKS)
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700181 timespec now;
jeffhaoa9ef3fd2011-12-13 18:33:43 -0800182 clock_gettime(CLOCK_MONOTONIC, &now);
Ian Rogers0f678472014-03-10 16:18:37 -0700183 return static_cast<uint64_t>(now.tv_sec) * UINT64_C(1000000) + now.tv_nsec / UINT64_C(1000);
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800184#else
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700185 timeval now;
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800186 gettimeofday(&now, NULL);
Ian Rogers0f678472014-03-10 16:18:37 -0700187 return static_cast<uint64_t>(now.tv_sec) * UINT64_C(1000000) + now.tv_usec;
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800188#endif
jeffhaoa9ef3fd2011-12-13 18:33:43 -0800189}
190
Elliott Hughes83df2ac2011-10-11 16:37:54 -0700191uint64_t NanoTime() {
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800192#if defined(HAVE_POSIX_CLOCKS)
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700193 timespec now;
Elliott Hughes83df2ac2011-10-11 16:37:54 -0700194 clock_gettime(CLOCK_MONOTONIC, &now);
Ian Rogers0f678472014-03-10 16:18:37 -0700195 return static_cast<uint64_t>(now.tv_sec) * UINT64_C(1000000000) + now.tv_nsec;
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800196#else
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700197 timeval now;
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800198 gettimeofday(&now, NULL);
Ian Rogers0f678472014-03-10 16:18:37 -0700199 return static_cast<uint64_t>(now.tv_sec) * UINT64_C(1000000000) + now.tv_usec * UINT64_C(1000);
Elliott Hughesad6c9c32012-01-19 17:39:12 -0800200#endif
Elliott Hughes83df2ac2011-10-11 16:37:54 -0700201}
202
Elliott Hughes0512f022012-03-15 22:10:52 -0700203uint64_t ThreadCpuNanoTime() {
204#if defined(HAVE_POSIX_CLOCKS)
Elliott Hughes7b9d9962012-04-20 18:48:18 -0700205 timespec now;
Elliott Hughes0512f022012-03-15 22:10:52 -0700206 clock_gettime(CLOCK_THREAD_CPUTIME_ID, &now);
Ian Rogers0f678472014-03-10 16:18:37 -0700207 return static_cast<uint64_t>(now.tv_sec) * UINT64_C(1000000000) + now.tv_nsec;
Elliott Hughes0512f022012-03-15 22:10:52 -0700208#else
209 UNIMPLEMENTED(WARNING);
210 return -1;
211#endif
212}
213
Ian Rogers56edc432013-01-18 16:51:51 -0800214void NanoSleep(uint64_t ns) {
215 timespec tm;
216 tm.tv_sec = 0;
217 tm.tv_nsec = ns;
218 nanosleep(&tm, NULL);
219}
220
Brian Carlstrombcc29262012-11-02 11:36:03 -0700221void InitTimeSpec(bool absolute, int clock, int64_t ms, int32_t ns, timespec* ts) {
222 int64_t endSec;
223
224 if (absolute) {
225#if !defined(__APPLE__)
226 clock_gettime(clock, ts);
227#else
228 UNUSED(clock);
229 timeval tv;
230 gettimeofday(&tv, NULL);
231 ts->tv_sec = tv.tv_sec;
232 ts->tv_nsec = tv.tv_usec * 1000;
233#endif
234 } else {
235 ts->tv_sec = 0;
236 ts->tv_nsec = 0;
237 }
238 endSec = ts->tv_sec + ms / 1000;
239 if (UNLIKELY(endSec >= 0x7fffffff)) {
240 std::ostringstream ss;
241 LOG(INFO) << "Note: end time exceeds epoch: " << ss.str();
242 endSec = 0x7ffffffe;
243 }
244 ts->tv_sec = endSec;
245 ts->tv_nsec = (ts->tv_nsec + (ms % 1000) * 1000000) + ns;
246
247 // Catch rollover.
248 if (ts->tv_nsec >= 1000000000L) {
249 ts->tv_sec++;
250 ts->tv_nsec -= 1000000000L;
251 }
252}
253
Ian Rogersef7d42f2014-01-06 12:55:46 -0800254std::string PrettyDescriptor(mirror::String* java_descriptor) {
Brian Carlstrome24fa612011-09-29 00:53:55 -0700255 if (java_descriptor == NULL) {
256 return "null";
257 }
Ian Rogers1ff3c982014-08-12 02:30:58 -0700258 return PrettyDescriptor(java_descriptor->ToModifiedUtf8().c_str());
Elliott Hughes6c8867d2011-10-03 16:34:05 -0700259}
Elliott Hughes5174fe62011-08-23 15:12:35 -0700260
Ian Rogersef7d42f2014-01-06 12:55:46 -0800261std::string PrettyDescriptor(mirror::Class* klass) {
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800262 if (klass == NULL) {
263 return "null";
264 }
Ian Rogers1ff3c982014-08-12 02:30:58 -0700265 std::string temp;
266 return PrettyDescriptor(klass->GetDescriptor(&temp));
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800267}
268
Ian Rogers1ff3c982014-08-12 02:30:58 -0700269std::string PrettyDescriptor(const char* descriptor) {
Elliott Hughes11e45072011-08-16 17:40:46 -0700270 // Count the number of '['s to get the dimensionality.
Ian Rogers1ff3c982014-08-12 02:30:58 -0700271 const char* c = descriptor;
Elliott Hughes11e45072011-08-16 17:40:46 -0700272 size_t dim = 0;
273 while (*c == '[') {
274 dim++;
275 c++;
276 }
277
278 // Reference or primitive?
279 if (*c == 'L') {
280 // "[[La/b/C;" -> "a.b.C[][]".
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700281 c++; // Skip the 'L'.
Elliott Hughes11e45072011-08-16 17:40:46 -0700282 } else {
283 // "[[B" -> "byte[][]".
284 // To make life easier, we make primitives look like unqualified
285 // reference types.
286 switch (*c) {
287 case 'B': c = "byte;"; break;
288 case 'C': c = "char;"; break;
289 case 'D': c = "double;"; break;
290 case 'F': c = "float;"; break;
291 case 'I': c = "int;"; break;
292 case 'J': c = "long;"; break;
293 case 'S': c = "short;"; break;
294 case 'Z': c = "boolean;"; break;
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700295 case 'V': c = "void;"; break; // Used when decoding return types.
Elliott Hughes5174fe62011-08-23 15:12:35 -0700296 default: return descriptor;
Elliott Hughes11e45072011-08-16 17:40:46 -0700297 }
298 }
299
300 // At this point, 'c' is a string of the form "fully/qualified/Type;"
301 // or "primitive;". Rewrite the type with '.' instead of '/':
302 std::string result;
303 const char* p = c;
304 while (*p != ';') {
305 char ch = *p++;
306 if (ch == '/') {
307 ch = '.';
308 }
309 result.push_back(ch);
310 }
311 // ...and replace the semicolon with 'dim' "[]" pairs:
Ian Rogers1ff3c982014-08-12 02:30:58 -0700312 for (size_t i = 0; i < dim; ++i) {
Elliott Hughes11e45072011-08-16 17:40:46 -0700313 result += "[]";
314 }
315 return result;
316}
317
Ian Rogers68d8b422014-07-17 11:09:10 -0700318std::string PrettyDescriptor(Primitive::Type type) {
Ian Rogers1ff3c982014-08-12 02:30:58 -0700319 return PrettyDescriptor(Primitive::Descriptor(type));
Ian Rogers68d8b422014-07-17 11:09:10 -0700320}
321
Ian Rogersef7d42f2014-01-06 12:55:46 -0800322std::string PrettyField(mirror::ArtField* f, bool with_type) {
Elliott Hughesa2501992011-08-26 19:39:54 -0700323 if (f == NULL) {
324 return "null";
325 }
Elliott Hughes54e7df12011-09-16 11:47:04 -0700326 std::string result;
327 if (with_type) {
Mathieu Chartier61c5ebc2014-06-05 17:42:53 -0700328 result += PrettyDescriptor(f->GetTypeDescriptor());
Elliott Hughes54e7df12011-09-16 11:47:04 -0700329 result += ' ';
330 }
Mathieu Chartier61c5ebc2014-06-05 17:42:53 -0700331 StackHandleScope<1> hs(Thread::Current());
332 result += PrettyDescriptor(FieldHelper(hs.NewHandle(f)).GetDeclaringClassDescriptor());
Elliott Hughesa2501992011-08-26 19:39:54 -0700333 result += '.';
Mathieu Chartier61c5ebc2014-06-05 17:42:53 -0700334 result += f->GetName();
Elliott Hughesa2501992011-08-26 19:39:54 -0700335 return result;
336}
337
Brian Carlstrom6f29d0e2012-05-11 15:50:29 -0700338std::string PrettyField(uint32_t field_idx, const DexFile& dex_file, bool with_type) {
Elliott Hughes60641a72013-02-27 14:36:16 -0800339 if (field_idx >= dex_file.NumFieldIds()) {
340 return StringPrintf("<<invalid-field-idx-%d>>", field_idx);
341 }
Brian Carlstrom6f29d0e2012-05-11 15:50:29 -0700342 const DexFile::FieldId& field_id = dex_file.GetFieldId(field_idx);
343 std::string result;
344 if (with_type) {
345 result += dex_file.GetFieldTypeDescriptor(field_id);
346 result += ' ';
347 }
348 result += PrettyDescriptor(dex_file.GetFieldDeclaringClassDescriptor(field_id));
349 result += '.';
350 result += dex_file.GetFieldName(field_id);
351 return result;
352}
353
Mathieu Chartier18c24b62012-09-10 08:54:25 -0700354std::string PrettyType(uint32_t type_idx, const DexFile& dex_file) {
Elliott Hughes60641a72013-02-27 14:36:16 -0800355 if (type_idx >= dex_file.NumTypeIds()) {
356 return StringPrintf("<<invalid-type-idx-%d>>", type_idx);
357 }
Mathieu Chartier18c24b62012-09-10 08:54:25 -0700358 const DexFile::TypeId& type_id = dex_file.GetTypeId(type_idx);
Mathieu Chartier4c70d772012-09-10 14:08:32 -0700359 return PrettyDescriptor(dex_file.GetTypeDescriptor(type_id));
Mathieu Chartier18c24b62012-09-10 08:54:25 -0700360}
361
Elliott Hughes9058f2b2012-03-22 18:06:48 -0700362std::string PrettyArguments(const char* signature) {
363 std::string result;
364 result += '(';
365 CHECK_EQ(*signature, '(');
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700366 ++signature; // Skip the '('.
Elliott Hughes9058f2b2012-03-22 18:06:48 -0700367 while (*signature != ')') {
368 size_t argument_length = 0;
369 while (signature[argument_length] == '[') {
370 ++argument_length;
371 }
372 if (signature[argument_length] == 'L') {
373 argument_length = (strchr(signature, ';') - signature + 1);
374 } else {
375 ++argument_length;
376 }
Ian Rogers1ff3c982014-08-12 02:30:58 -0700377 {
378 std::string argument_descriptor(signature, argument_length);
379 result += PrettyDescriptor(argument_descriptor.c_str());
380 }
Elliott Hughes9058f2b2012-03-22 18:06:48 -0700381 if (signature[argument_length] != ')') {
382 result += ", ";
383 }
384 signature += argument_length;
385 }
386 CHECK_EQ(*signature, ')');
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700387 ++signature; // Skip the ')'.
Elliott Hughes9058f2b2012-03-22 18:06:48 -0700388 result += ')';
389 return result;
390}
391
392std::string PrettyReturnType(const char* signature) {
393 const char* return_type = strchr(signature, ')');
394 CHECK(return_type != NULL);
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700395 ++return_type; // Skip ')'.
Elliott Hughes9058f2b2012-03-22 18:06:48 -0700396 return PrettyDescriptor(return_type);
397}
398
Ian Rogersef7d42f2014-01-06 12:55:46 -0800399std::string PrettyMethod(mirror::ArtMethod* m, bool with_signature) {
Ian Rogers16ce0922014-01-10 14:59:36 -0800400 if (m == nullptr) {
Elliott Hughesa0b8feb2011-08-20 09:50:55 -0700401 return "null";
402 }
Mathieu Chartierbfd9a432014-05-21 17:43:44 -0700403 std::string result(PrettyDescriptor(m->GetDeclaringClassDescriptor()));
Elliott Hughesa0b8feb2011-08-20 09:50:55 -0700404 result += '.';
Mathieu Chartierbfd9a432014-05-21 17:43:44 -0700405 result += m->GetName();
Ian Rogers16ce0922014-01-10 14:59:36 -0800406 if (UNLIKELY(m->IsFastNative())) {
407 result += "!";
408 }
Elliott Hughesa0b8feb2011-08-20 09:50:55 -0700409 if (with_signature) {
Mathieu Chartierbfd9a432014-05-21 17:43:44 -0700410 const Signature signature = m->GetSignature();
Ian Rogersd91d6d62013-09-25 20:26:14 -0700411 std::string sig_as_string(signature.ToString());
412 if (signature == Signature::NoSignature()) {
413 return result + sig_as_string;
Elliott Hughesf8c11932012-03-23 19:53:59 -0700414 }
Ian Rogersd91d6d62013-09-25 20:26:14 -0700415 result = PrettyReturnType(sig_as_string.c_str()) + " " + result +
416 PrettyArguments(sig_as_string.c_str());
Elliott Hughesa0b8feb2011-08-20 09:50:55 -0700417 }
418 return result;
419}
420
Ian Rogers0571d352011-11-03 19:51:38 -0700421std::string PrettyMethod(uint32_t method_idx, const DexFile& dex_file, bool with_signature) {
Elliott Hughes60641a72013-02-27 14:36:16 -0800422 if (method_idx >= dex_file.NumMethodIds()) {
423 return StringPrintf("<<invalid-method-idx-%d>>", method_idx);
424 }
Ian Rogers0571d352011-11-03 19:51:38 -0700425 const DexFile::MethodId& method_id = dex_file.GetMethodId(method_idx);
426 std::string result(PrettyDescriptor(dex_file.GetMethodDeclaringClassDescriptor(method_id)));
427 result += '.';
428 result += dex_file.GetMethodName(method_id);
429 if (with_signature) {
Ian Rogersd91d6d62013-09-25 20:26:14 -0700430 const Signature signature = dex_file.GetMethodSignature(method_id);
431 std::string sig_as_string(signature.ToString());
432 if (signature == Signature::NoSignature()) {
433 return result + sig_as_string;
Elliott Hughesf8c11932012-03-23 19:53:59 -0700434 }
Ian Rogersd91d6d62013-09-25 20:26:14 -0700435 result = PrettyReturnType(sig_as_string.c_str()) + " " + result +
436 PrettyArguments(sig_as_string.c_str());
Ian Rogers0571d352011-11-03 19:51:38 -0700437 }
438 return result;
439}
440
Ian Rogersef7d42f2014-01-06 12:55:46 -0800441std::string PrettyTypeOf(mirror::Object* obj) {
Elliott Hughes11e45072011-08-16 17:40:46 -0700442 if (obj == NULL) {
443 return "null";
444 }
445 if (obj->GetClass() == NULL) {
446 return "(raw)";
447 }
Ian Rogers1ff3c982014-08-12 02:30:58 -0700448 std::string temp;
449 std::string result(PrettyDescriptor(obj->GetClass()->GetDescriptor(&temp)));
Elliott Hughes11e45072011-08-16 17:40:46 -0700450 if (obj->IsClass()) {
Ian Rogers1ff3c982014-08-12 02:30:58 -0700451 result += "<" + PrettyDescriptor(obj->AsClass()->GetDescriptor(&temp)) + ">";
Elliott Hughes11e45072011-08-16 17:40:46 -0700452 }
453 return result;
454}
455
Ian Rogersef7d42f2014-01-06 12:55:46 -0800456std::string PrettyClass(mirror::Class* c) {
Elliott Hughes54e7df12011-09-16 11:47:04 -0700457 if (c == NULL) {
458 return "null";
459 }
460 std::string result;
461 result += "java.lang.Class<";
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800462 result += PrettyDescriptor(c);
Elliott Hughes54e7df12011-09-16 11:47:04 -0700463 result += ">";
464 return result;
465}
466
Ian Rogersef7d42f2014-01-06 12:55:46 -0800467std::string PrettyClassAndClassLoader(mirror::Class* c) {
Ian Rogersd81871c2011-10-03 13:57:23 -0700468 if (c == NULL) {
469 return "null";
470 }
471 std::string result;
472 result += "java.lang.Class<";
Ian Rogers6d4d9fc2011-11-30 16:24:48 -0800473 result += PrettyDescriptor(c);
Ian Rogersd81871c2011-10-03 13:57:23 -0700474 result += ",";
475 result += PrettyTypeOf(c->GetClassLoader());
476 // TODO: add an identifying hash value for the loader
477 result += ">";
478 return result;
479}
480
Mathieu Chartiere6da9af2013-12-16 11:54:42 -0800481std::string PrettySize(int64_t byte_count) {
Elliott Hughesc967f782012-04-16 10:23:15 -0700482 // The byte thresholds at which we display amounts. A byte count is displayed
483 // in unit U when kUnitThresholds[U] <= bytes < kUnitThresholds[U+1].
Ian Rogersef7d42f2014-01-06 12:55:46 -0800484 static const int64_t kUnitThresholds[] = {
Elliott Hughesc967f782012-04-16 10:23:15 -0700485 0, // B up to...
486 3*1024, // KB up to...
487 2*1024*1024, // MB up to...
488 1024*1024*1024 // GB from here.
489 };
Mathieu Chartiere6da9af2013-12-16 11:54:42 -0800490 static const int64_t kBytesPerUnit[] = { 1, KB, MB, GB };
Elliott Hughesc967f782012-04-16 10:23:15 -0700491 static const char* const kUnitStrings[] = { "B", "KB", "MB", "GB" };
Mathieu Chartiere6da9af2013-12-16 11:54:42 -0800492 const char* negative_str = "";
493 if (byte_count < 0) {
494 negative_str = "-";
495 byte_count = -byte_count;
496 }
Elliott Hughesc967f782012-04-16 10:23:15 -0700497 int i = arraysize(kUnitThresholds);
498 while (--i > 0) {
499 if (byte_count >= kUnitThresholds[i]) {
500 break;
501 }
Ian Rogers3bb17a62012-01-27 23:56:44 -0800502 }
Brian Carlstrom474cc792014-03-07 14:18:15 -0800503 return StringPrintf("%s%" PRId64 "%s",
504 negative_str, byte_count / kBytesPerUnit[i], kUnitStrings[i]);
Ian Rogers3bb17a62012-01-27 23:56:44 -0800505}
506
Mathieu Chartierf5997b42014-06-20 10:37:54 -0700507std::string PrettyDuration(uint64_t nano_duration, size_t max_fraction_digits) {
Ian Rogers3bb17a62012-01-27 23:56:44 -0800508 if (nano_duration == 0) {
509 return "0";
510 } else {
Mathieu Chartierf5997b42014-06-20 10:37:54 -0700511 return FormatDuration(nano_duration, GetAppropriateTimeUnit(nano_duration),
512 max_fraction_digits);
Mathieu Chartier0325e622012-09-05 14:22:51 -0700513 }
514}
515
516TimeUnit GetAppropriateTimeUnit(uint64_t nano_duration) {
517 const uint64_t one_sec = 1000 * 1000 * 1000;
518 const uint64_t one_ms = 1000 * 1000;
519 const uint64_t one_us = 1000;
520 if (nano_duration >= one_sec) {
521 return kTimeUnitSecond;
522 } else if (nano_duration >= one_ms) {
523 return kTimeUnitMillisecond;
524 } else if (nano_duration >= one_us) {
525 return kTimeUnitMicrosecond;
526 } else {
527 return kTimeUnitNanosecond;
528 }
529}
530
531uint64_t GetNsToTimeUnitDivisor(TimeUnit time_unit) {
532 const uint64_t one_sec = 1000 * 1000 * 1000;
533 const uint64_t one_ms = 1000 * 1000;
534 const uint64_t one_us = 1000;
535
536 switch (time_unit) {
537 case kTimeUnitSecond:
538 return one_sec;
539 case kTimeUnitMillisecond:
540 return one_ms;
541 case kTimeUnitMicrosecond:
542 return one_us;
543 case kTimeUnitNanosecond:
544 return 1;
545 }
546 return 0;
547}
548
Mathieu Chartierf5997b42014-06-20 10:37:54 -0700549std::string FormatDuration(uint64_t nano_duration, TimeUnit time_unit,
550 size_t max_fraction_digits) {
551 const char* unit = nullptr;
Mathieu Chartier0325e622012-09-05 14:22:51 -0700552 uint64_t divisor = GetNsToTimeUnitDivisor(time_unit);
Mathieu Chartier0325e622012-09-05 14:22:51 -0700553 switch (time_unit) {
554 case kTimeUnitSecond:
Ian Rogers3bb17a62012-01-27 23:56:44 -0800555 unit = "s";
Mathieu Chartier0325e622012-09-05 14:22:51 -0700556 break;
557 case kTimeUnitMillisecond:
Ian Rogers3bb17a62012-01-27 23:56:44 -0800558 unit = "ms";
Mathieu Chartier0325e622012-09-05 14:22:51 -0700559 break;
560 case kTimeUnitMicrosecond:
Ian Rogers3bb17a62012-01-27 23:56:44 -0800561 unit = "us";
Mathieu Chartier0325e622012-09-05 14:22:51 -0700562 break;
563 case kTimeUnitNanosecond:
Ian Rogers3bb17a62012-01-27 23:56:44 -0800564 unit = "ns";
Mathieu Chartier0325e622012-09-05 14:22:51 -0700565 break;
566 }
Mathieu Chartierf5997b42014-06-20 10:37:54 -0700567 const uint64_t whole_part = nano_duration / divisor;
Mathieu Chartier0325e622012-09-05 14:22:51 -0700568 uint64_t fractional_part = nano_duration % divisor;
569 if (fractional_part == 0) {
Ian Rogersef7d42f2014-01-06 12:55:46 -0800570 return StringPrintf("%" PRIu64 "%s", whole_part, unit);
Mathieu Chartier0325e622012-09-05 14:22:51 -0700571 } else {
Mathieu Chartierf5997b42014-06-20 10:37:54 -0700572 static constexpr size_t kMaxDigits = 30;
Andreas Gampe829b4ba2014-06-26 13:49:36 -0700573 size_t avail_digits = kMaxDigits;
Mathieu Chartierf5997b42014-06-20 10:37:54 -0700574 char fraction_buffer[kMaxDigits];
575 char* ptr = fraction_buffer;
576 uint64_t multiplier = 10;
577 // This infinite loops if fractional part is 0.
Andreas Gampe829b4ba2014-06-26 13:49:36 -0700578 while (avail_digits > 1 && fractional_part * multiplier < divisor) {
Mathieu Chartierf5997b42014-06-20 10:37:54 -0700579 multiplier *= 10;
580 *ptr++ = '0';
Andreas Gampe829b4ba2014-06-26 13:49:36 -0700581 avail_digits--;
Ian Rogers3bb17a62012-01-27 23:56:44 -0800582 }
Andreas Gampe829b4ba2014-06-26 13:49:36 -0700583 snprintf(ptr, avail_digits, "%" PRIu64, fractional_part);
Mathieu Chartierf5997b42014-06-20 10:37:54 -0700584 fraction_buffer[std::min(kMaxDigits - 1, max_fraction_digits)] = '\0';
585 return StringPrintf("%" PRIu64 ".%s%s", whole_part, fraction_buffer, unit);
Ian Rogers3bb17a62012-01-27 23:56:44 -0800586 }
587}
588
Ian Rogers576ca0c2014-06-06 15:58:22 -0700589std::string PrintableChar(uint16_t ch) {
590 std::string result;
591 result += '\'';
592 if (NeedsEscaping(ch)) {
593 StringAppendF(&result, "\\u%04x", ch);
594 } else {
595 result += ch;
596 }
597 result += '\'';
598 return result;
599}
600
Elliott Hughes82914b62012-04-09 15:56:29 -0700601std::string PrintableString(const std::string& utf) {
602 std::string result;
603 result += '"';
604 const char* p = utf.c_str();
605 size_t char_count = CountModifiedUtf8Chars(p);
606 for (size_t i = 0; i < char_count; ++i) {
607 uint16_t ch = GetUtf16FromUtf8(&p);
608 if (ch == '\\') {
609 result += "\\\\";
610 } else if (ch == '\n') {
611 result += "\\n";
612 } else if (ch == '\r') {
613 result += "\\r";
614 } else if (ch == '\t') {
615 result += "\\t";
616 } else if (NeedsEscaping(ch)) {
617 StringAppendF(&result, "\\u%04x", ch);
618 } else {
619 result += ch;
620 }
621 }
622 result += '"';
623 return result;
624}
625
Elliott Hughesd8c00d02012-01-30 14:08:31 -0800626// See http://java.sun.com/j2se/1.5.0/docs/guide/jni/spec/design.html#wp615 for the full rules.
Elliott Hughes79082e32011-08-25 12:07:32 -0700627std::string MangleForJni(const std::string& s) {
628 std::string result;
629 size_t char_count = CountModifiedUtf8Chars(s.c_str());
630 const char* cp = &s[0];
631 for (size_t i = 0; i < char_count; ++i) {
632 uint16_t ch = GetUtf16FromUtf8(&cp);
Elliott Hughesd8c00d02012-01-30 14:08:31 -0800633 if ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z') || (ch >= '0' && ch <= '9')) {
634 result.push_back(ch);
635 } else if (ch == '.' || ch == '/') {
636 result += "_";
637 } else if (ch == '_') {
638 result += "_1";
639 } else if (ch == ';') {
640 result += "_2";
641 } else if (ch == '[') {
642 result += "_3";
Elliott Hughes79082e32011-08-25 12:07:32 -0700643 } else {
Elliott Hughesd8c00d02012-01-30 14:08:31 -0800644 StringAppendF(&result, "_0%04x", ch);
Elliott Hughes79082e32011-08-25 12:07:32 -0700645 }
646 }
647 return result;
648}
649
Brian Carlstromf91c8c32011-09-21 17:30:34 -0700650std::string DotToDescriptor(const char* class_name) {
651 std::string descriptor(class_name);
652 std::replace(descriptor.begin(), descriptor.end(), '.', '/');
653 if (descriptor.length() > 0 && descriptor[0] != '[') {
654 descriptor = "L" + descriptor + ";";
655 }
656 return descriptor;
657}
658
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800659std::string DescriptorToDot(const char* descriptor) {
Elliott Hughes2435a572012-02-17 16:07:41 -0800660 size_t length = strlen(descriptor);
Ian Rogers1ff3c982014-08-12 02:30:58 -0700661 if (length > 1) {
662 if (descriptor[0] == 'L' && descriptor[length - 1] == ';') {
663 // Descriptors have the leading 'L' and trailing ';' stripped.
664 std::string result(descriptor + 1, length - 2);
665 std::replace(result.begin(), result.end(), '/', '.');
666 return result;
667 } else {
668 // For arrays the 'L' and ';' remain intact.
669 std::string result(descriptor);
670 std::replace(result.begin(), result.end(), '/', '.');
671 return result;
672 }
Elliott Hughes2435a572012-02-17 16:07:41 -0800673 }
Ian Rogers1ff3c982014-08-12 02:30:58 -0700674 // Do nothing for non-class/array descriptors.
Elliott Hughes2435a572012-02-17 16:07:41 -0800675 return descriptor;
Elliott Hughes91bf6cd2012-02-14 17:27:48 -0800676}
677
678std::string DescriptorToName(const char* descriptor) {
Elliott Hughesf1a5adc2012-02-10 18:09:35 -0800679 size_t length = strlen(descriptor);
Elliott Hughes2435a572012-02-17 16:07:41 -0800680 if (descriptor[0] == 'L' && descriptor[length - 1] == ';') {
681 std::string result(descriptor + 1, length - 2);
682 return result;
683 }
684 return descriptor;
Brian Carlstromaded5f72011-10-07 17:15:04 -0700685}
686
Ian Rogersef7d42f2014-01-06 12:55:46 -0800687std::string JniShortName(mirror::ArtMethod* m) {
Mathieu Chartierbfd9a432014-05-21 17:43:44 -0700688 std::string class_name(m->GetDeclaringClassDescriptor());
Elliott Hughes79082e32011-08-25 12:07:32 -0700689 // Remove the leading 'L' and trailing ';'...
Elliott Hughesf5a7a472011-10-07 14:31:02 -0700690 CHECK_EQ(class_name[0], 'L') << class_name;
691 CHECK_EQ(class_name[class_name.size() - 1], ';') << class_name;
Elliott Hughes79082e32011-08-25 12:07:32 -0700692 class_name.erase(0, 1);
693 class_name.erase(class_name.size() - 1, 1);
694
Mathieu Chartierbfd9a432014-05-21 17:43:44 -0700695 std::string method_name(m->GetName());
Elliott Hughes79082e32011-08-25 12:07:32 -0700696
697 std::string short_name;
698 short_name += "Java_";
699 short_name += MangleForJni(class_name);
700 short_name += "_";
701 short_name += MangleForJni(method_name);
702 return short_name;
703}
704
Ian Rogersef7d42f2014-01-06 12:55:46 -0800705std::string JniLongName(mirror::ArtMethod* m) {
Elliott Hughes79082e32011-08-25 12:07:32 -0700706 std::string long_name;
707 long_name += JniShortName(m);
708 long_name += "__";
709
Mathieu Chartierbfd9a432014-05-21 17:43:44 -0700710 std::string signature(m->GetSignature().ToString());
Elliott Hughes79082e32011-08-25 12:07:32 -0700711 signature.erase(0, 1);
712 signature.erase(signature.begin() + signature.find(')'), signature.end());
713
714 long_name += MangleForJni(signature);
715
716 return long_name;
717}
718
jeffhao10037c82012-01-23 15:06:23 -0800719// Helper for IsValidPartOfMemberNameUtf8(), a bit vector indicating valid low ascii.
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700720uint32_t DEX_MEMBER_VALID_LOW_ASCII[4] = {
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700721 0x00000000, // 00..1f low control characters; nothing valid
722 0x03ff2010, // 20..3f digits and symbols; valid: '0'..'9', '$', '-'
723 0x87fffffe, // 40..5f uppercase etc.; valid: 'A'..'Z', '_'
724 0x07fffffe // 60..7f lowercase etc.; valid: 'a'..'z'
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700725};
726
jeffhao10037c82012-01-23 15:06:23 -0800727// Helper for IsValidPartOfMemberNameUtf8(); do not call directly.
728bool IsValidPartOfMemberNameUtf8Slow(const char** pUtf8Ptr) {
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700729 /*
730 * It's a multibyte encoded character. Decode it and analyze. We
731 * accept anything that isn't (a) an improperly encoded low value,
732 * (b) an improper surrogate pair, (c) an encoded '\0', (d) a high
733 * control character, or (e) a high space, layout, or special
734 * character (U+00a0, U+2000..U+200f, U+2028..U+202f,
735 * U+fff0..U+ffff). This is all specified in the dex format
736 * document.
737 */
738
739 uint16_t utf16 = GetUtf16FromUtf8(pUtf8Ptr);
740
741 // Perform follow-up tests based on the high 8 bits.
742 switch (utf16 >> 8) {
743 case 0x00:
744 // It's only valid if it's above the ISO-8859-1 high space (0xa0).
745 return (utf16 > 0x00a0);
746 case 0xd8:
747 case 0xd9:
748 case 0xda:
749 case 0xdb:
750 // It's a leading surrogate. Check to see that a trailing
751 // surrogate follows.
752 utf16 = GetUtf16FromUtf8(pUtf8Ptr);
753 return (utf16 >= 0xdc00) && (utf16 <= 0xdfff);
754 case 0xdc:
755 case 0xdd:
756 case 0xde:
757 case 0xdf:
758 // It's a trailing surrogate, which is not valid at this point.
759 return false;
760 case 0x20:
761 case 0xff:
762 // It's in the range that has spaces, controls, and specials.
763 switch (utf16 & 0xfff8) {
764 case 0x2000:
765 case 0x2008:
766 case 0x2028:
767 case 0xfff0:
768 case 0xfff8:
769 return false;
770 }
771 break;
772 }
773 return true;
774}
775
776/* Return whether the pointed-at modified-UTF-8 encoded character is
777 * valid as part of a member name, updating the pointer to point past
778 * the consumed character. This will consume two encoded UTF-16 code
779 * points if the character is encoded as a surrogate pair. Also, if
780 * this function returns false, then the given pointer may only have
781 * been partially advanced.
782 */
Ian Rogers8d31bbd2013-10-13 10:44:14 -0700783static bool IsValidPartOfMemberNameUtf8(const char** pUtf8Ptr) {
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700784 uint8_t c = (uint8_t) **pUtf8Ptr;
Ian Rogers8d31bbd2013-10-13 10:44:14 -0700785 if (LIKELY(c <= 0x7f)) {
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700786 // It's low-ascii, so check the table.
787 uint32_t wordIdx = c >> 5;
788 uint32_t bitIdx = c & 0x1f;
789 (*pUtf8Ptr)++;
790 return (DEX_MEMBER_VALID_LOW_ASCII[wordIdx] & (1 << bitIdx)) != 0;
791 }
792
793 // It's a multibyte encoded character. Call a non-inline function
794 // for the heavy lifting.
jeffhao10037c82012-01-23 15:06:23 -0800795 return IsValidPartOfMemberNameUtf8Slow(pUtf8Ptr);
796}
797
798bool IsValidMemberName(const char* s) {
799 bool angle_name = false;
800
Elliott Hughesb25c3f62012-03-26 16:35:06 -0700801 switch (*s) {
jeffhao10037c82012-01-23 15:06:23 -0800802 case '\0':
803 // The empty string is not a valid name.
804 return false;
805 case '<':
806 angle_name = true;
807 s++;
808 break;
809 }
810
811 while (true) {
812 switch (*s) {
813 case '\0':
814 return !angle_name;
815 case '>':
816 return angle_name && s[1] == '\0';
817 }
818
819 if (!IsValidPartOfMemberNameUtf8(&s)) {
820 return false;
821 }
822 }
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700823}
824
Elliott Hughes906e6852011-10-28 14:52:10 -0700825enum ClassNameType { kName, kDescriptor };
Ian Rogers8d31bbd2013-10-13 10:44:14 -0700826static bool IsValidClassName(const char* s, ClassNameType type, char separator) {
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700827 int arrayCount = 0;
828 while (*s == '[') {
829 arrayCount++;
830 s++;
831 }
832
833 if (arrayCount > 255) {
834 // Arrays may have no more than 255 dimensions.
835 return false;
836 }
837
838 if (arrayCount != 0) {
839 /*
840 * If we're looking at an array of some sort, then it doesn't
841 * matter if what is being asked for is a class name; the
842 * format looks the same as a type descriptor in that case, so
843 * treat it as such.
844 */
Elliott Hughes906e6852011-10-28 14:52:10 -0700845 type = kDescriptor;
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700846 }
847
Elliott Hughes906e6852011-10-28 14:52:10 -0700848 if (type == kDescriptor) {
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700849 /*
850 * We are looking for a descriptor. Either validate it as a
851 * single-character primitive type, or continue on to check the
852 * embedded class name (bracketed by "L" and ";").
853 */
854 switch (*(s++)) {
855 case 'B':
856 case 'C':
857 case 'D':
858 case 'F':
859 case 'I':
860 case 'J':
861 case 'S':
862 case 'Z':
863 // These are all single-character descriptors for primitive types.
864 return (*s == '\0');
865 case 'V':
866 // Non-array void is valid, but you can't have an array of void.
867 return (arrayCount == 0) && (*s == '\0');
868 case 'L':
869 // Class name: Break out and continue below.
870 break;
871 default:
872 // Oddball descriptor character.
873 return false;
874 }
875 }
876
877 /*
878 * We just consumed the 'L' that introduces a class name as part
879 * of a type descriptor, or we are looking for an unadorned class
880 * name.
881 */
882
Brian Carlstrom7934ac22013-07-26 10:54:15 -0700883 bool sepOrFirst = true; // first character or just encountered a separator.
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700884 for (;;) {
885 uint8_t c = (uint8_t) *s;
886 switch (c) {
887 case '\0':
888 /*
889 * Premature end for a type descriptor, but valid for
890 * a class name as long as we haven't encountered an
891 * empty component (including the degenerate case of
892 * the empty string "").
893 */
Elliott Hughes906e6852011-10-28 14:52:10 -0700894 return (type == kName) && !sepOrFirst;
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700895 case ';':
896 /*
897 * Invalid character for a class name, but the
898 * legitimate end of a type descriptor. In the latter
899 * case, make sure that this is the end of the string
900 * and that it doesn't end with an empty component
901 * (including the degenerate case of "L;").
902 */
Elliott Hughes906e6852011-10-28 14:52:10 -0700903 return (type == kDescriptor) && !sepOrFirst && (s[1] == '\0');
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700904 case '/':
905 case '.':
906 if (c != separator) {
907 // The wrong separator character.
908 return false;
909 }
910 if (sepOrFirst) {
911 // Separator at start or two separators in a row.
912 return false;
913 }
914 sepOrFirst = true;
915 s++;
916 break;
917 default:
jeffhao10037c82012-01-23 15:06:23 -0800918 if (!IsValidPartOfMemberNameUtf8(&s)) {
Elliott Hughes64bf5a32011-09-20 14:43:12 -0700919 return false;
920 }
921 sepOrFirst = false;
922 break;
923 }
924 }
925}
926
Elliott Hughes906e6852011-10-28 14:52:10 -0700927bool IsValidBinaryClassName(const char* s) {
928 return IsValidClassName(s, kName, '.');
929}
930
931bool IsValidJniClassName(const char* s) {
932 return IsValidClassName(s, kName, '/');
933}
934
935bool IsValidDescriptor(const char* s) {
936 return IsValidClassName(s, kDescriptor, '/');
937}
938
Elliott Hughes48436bb2012-02-07 15:23:28 -0800939void Split(const std::string& s, char separator, std::vector<std::string>& result) {
Elliott Hughes34023802011-08-30 12:06:17 -0700940 const char* p = s.data();
941 const char* end = p + s.size();
942 while (p != end) {
Elliott Hughes48436bb2012-02-07 15:23:28 -0800943 if (*p == separator) {
Elliott Hughes34023802011-08-30 12:06:17 -0700944 ++p;
945 } else {
946 const char* start = p;
Elliott Hughes48436bb2012-02-07 15:23:28 -0800947 while (++p != end && *p != separator) {
948 // Skip to the next occurrence of the separator.
Elliott Hughes34023802011-08-30 12:06:17 -0700949 }
950 result.push_back(std::string(start, p - start));
951 }
952 }
953}
954
Dave Allison70202782013-10-22 17:52:19 -0700955std::string Trim(std::string s) {
956 std::string result;
957 unsigned int start_index = 0;
958 unsigned int end_index = s.size() - 1;
959
960 // Skip initial whitespace.
961 while (start_index < s.size()) {
962 if (!isspace(s[start_index])) {
963 break;
964 }
965 start_index++;
966 }
967
968 // Skip terminating whitespace.
969 while (end_index >= start_index) {
970 if (!isspace(s[end_index])) {
971 break;
972 }
973 end_index--;
974 }
975
976 // All spaces, no beef.
977 if (end_index < start_index) {
978 return "";
979 }
980 // Start_index is the first non-space, end_index is the last one.
981 return s.substr(start_index, end_index - start_index + 1);
982}
983
Elliott Hughes48436bb2012-02-07 15:23:28 -0800984template <typename StringT>
985std::string Join(std::vector<StringT>& strings, char separator) {
986 if (strings.empty()) {
987 return "";
988 }
989
990 std::string result(strings[0]);
991 for (size_t i = 1; i < strings.size(); ++i) {
992 result += separator;
993 result += strings[i];
994 }
995 return result;
996}
997
998// Explicit instantiations.
999template std::string Join<std::string>(std::vector<std::string>& strings, char separator);
1000template std::string Join<const char*>(std::vector<const char*>& strings, char separator);
1001template std::string Join<char*>(std::vector<char*>& strings, char separator);
1002
Elliott Hughesf1a5adc2012-02-10 18:09:35 -08001003bool StartsWith(const std::string& s, const char* prefix) {
1004 return s.compare(0, strlen(prefix), prefix) == 0;
1005}
1006
Brian Carlstrom7a967b32012-03-28 15:23:10 -07001007bool EndsWith(const std::string& s, const char* suffix) {
1008 size_t suffix_length = strlen(suffix);
1009 size_t string_length = s.size();
1010 if (suffix_length > string_length) {
1011 return false;
1012 }
1013 size_t offset = string_length - suffix_length;
1014 return s.compare(offset, suffix_length, suffix) == 0;
1015}
1016
Elliott Hughes22869a92012-03-27 14:08:24 -07001017void SetThreadName(const char* thread_name) {
Elliott Hughesdcc24742011-09-07 14:02:44 -07001018 int hasAt = 0;
1019 int hasDot = 0;
Elliott Hughes22869a92012-03-27 14:08:24 -07001020 const char* s = thread_name;
Elliott Hughesdcc24742011-09-07 14:02:44 -07001021 while (*s) {
1022 if (*s == '.') {
1023 hasDot = 1;
1024 } else if (*s == '@') {
1025 hasAt = 1;
1026 }
1027 s++;
1028 }
Elliott Hughes22869a92012-03-27 14:08:24 -07001029 int len = s - thread_name;
Elliott Hughesdcc24742011-09-07 14:02:44 -07001030 if (len < 15 || hasAt || !hasDot) {
Elliott Hughes22869a92012-03-27 14:08:24 -07001031 s = thread_name;
Elliott Hughesdcc24742011-09-07 14:02:44 -07001032 } else {
Elliott Hughes22869a92012-03-27 14:08:24 -07001033 s = thread_name + len - 15;
Elliott Hughesdcc24742011-09-07 14:02:44 -07001034 }
Elliott Hughes49e36ec2014-08-20 20:18:18 -07001035#if defined(__BIONIC__)
Elliott Hughes7c6a61e2012-03-12 18:01:41 -07001036 // pthread_setname_np fails rather than truncating long strings.
Elliott Hughesdcc24742011-09-07 14:02:44 -07001037 char buf[16]; // MAX_TASK_COMM_LEN=16 is hard-coded into bionic
1038 strncpy(buf, s, sizeof(buf)-1);
1039 buf[sizeof(buf)-1] = '\0';
1040 errno = pthread_setname_np(pthread_self(), buf);
1041 if (errno != 0) {
1042 PLOG(WARNING) << "Unable to set the name of current thread to '" << buf << "'";
1043 }
Elliott Hughes4ae722a2012-03-13 11:08:51 -07001044#elif defined(__APPLE__) && MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
Elliott Hughes22869a92012-03-27 14:08:24 -07001045 pthread_setname_np(thread_name);
Elliott Hughesdcc24742011-09-07 14:02:44 -07001046#elif defined(HAVE_PRCTL)
Elliott Hughes398f64b2012-03-26 18:05:48 -07001047 prctl(PR_SET_NAME, (unsigned long) s, 0, 0, 0); // NOLINT (unsigned long)
Elliott Hughesdcc24742011-09-07 14:02:44 -07001048#else
Elliott Hughes22869a92012-03-27 14:08:24 -07001049 UNIMPLEMENTED(WARNING) << thread_name;
Elliott Hughesdcc24742011-09-07 14:02:44 -07001050#endif
1051}
1052
Brian Carlstrom29212012013-09-12 22:18:30 -07001053void GetTaskStats(pid_t tid, char* state, int* utime, int* stime, int* task_cpu) {
1054 *utime = *stime = *task_cpu = 0;
Elliott Hughesbfe487b2011-10-26 15:48:55 -07001055 std::string stats;
Elliott Hughes8a31b502012-04-30 19:36:11 -07001056 if (!ReadFileToString(StringPrintf("/proc/self/task/%d/stat", tid), &stats)) {
Elliott Hughesbfe487b2011-10-26 15:48:55 -07001057 return;
1058 }
1059 // Skip the command, which may contain spaces.
1060 stats = stats.substr(stats.find(')') + 2);
1061 // Extract the three fields we care about.
1062 std::vector<std::string> fields;
1063 Split(stats, ' ', fields);
Brian Carlstrom29212012013-09-12 22:18:30 -07001064 *state = fields[0][0];
1065 *utime = strtoull(fields[11].c_str(), NULL, 10);
1066 *stime = strtoull(fields[12].c_str(), NULL, 10);
1067 *task_cpu = strtoull(fields[36].c_str(), NULL, 10);
Elliott Hughesbfe487b2011-10-26 15:48:55 -07001068}
1069
Elliott Hughes1bac54f2012-03-16 12:48:31 -07001070std::string GetSchedulerGroupName(pid_t tid) {
1071 // /proc/<pid>/cgroup looks like this:
1072 // 2:devices:/
1073 // 1:cpuacct,cpu:/
1074 // We want the third field from the line whose second field contains the "cpu" token.
1075 std::string cgroup_file;
1076 if (!ReadFileToString(StringPrintf("/proc/self/task/%d/cgroup", tid), &cgroup_file)) {
1077 return "";
1078 }
1079 std::vector<std::string> cgroup_lines;
1080 Split(cgroup_file, '\n', cgroup_lines);
1081 for (size_t i = 0; i < cgroup_lines.size(); ++i) {
1082 std::vector<std::string> cgroup_fields;
1083 Split(cgroup_lines[i], ':', cgroup_fields);
1084 std::vector<std::string> cgroups;
1085 Split(cgroup_fields[1], ',', cgroups);
1086 for (size_t i = 0; i < cgroups.size(); ++i) {
1087 if (cgroups[i] == "cpu") {
Brian Carlstrom7934ac22013-07-26 10:54:15 -07001088 return cgroup_fields[2].substr(1); // Skip the leading slash.
Elliott Hughes1bac54f2012-03-16 12:48:31 -07001089 }
1090 }
1091 }
1092 return "";
1093}
1094
Christopher Ferrisa2cee182014-04-16 19:13:59 -07001095void DumpNativeStack(std::ostream& os, pid_t tid, const char* prefix,
Kenny Root067d20f2014-03-05 14:57:21 -08001096 mirror::ArtMethod* current_method) {
Ian Rogersc5f17732014-06-05 20:48:42 -07001097#ifdef __linux__
Ian Rogers700a4022014-05-19 16:49:03 -07001098 std::unique_ptr<Backtrace> backtrace(Backtrace::Create(BACKTRACE_CURRENT_PROCESS, tid));
Christopher Ferris7b5f0cf2013-11-01 15:18:45 -07001099 if (!backtrace->Unwind(0)) {
1100 os << prefix << "(backtrace::Unwind failed for thread " << tid << ")\n";
Elliott Hughes46e251b2012-05-22 15:10:45 -07001101 return;
Christopher Ferris7b5f0cf2013-11-01 15:18:45 -07001102 } else if (backtrace->NumFrames() == 0) {
Elliott Hughes225f5a12012-06-11 11:23:48 -07001103 os << prefix << "(no native stack frames for thread " << tid << ")\n";
Elliott Hughes46e251b2012-05-22 15:10:45 -07001104 return;
1105 }
1106
Christopher Ferris943af7d2014-01-16 12:41:46 -08001107 for (Backtrace::const_iterator it = backtrace->begin();
1108 it != backtrace->end(); ++it) {
Elliott Hughes46e251b2012-05-22 15:10:45 -07001109 // We produce output like this:
Christopher Ferrisa2cee182014-04-16 19:13:59 -07001110 // ] #00 pc 000075bb8 /system/lib/libc.so (unwind_backtrace_thread+536)
1111 // In order for parsing tools to continue to function, the stack dump
1112 // format must at least adhere to this format:
1113 // #XX pc <RELATIVE_ADDR> <FULL_PATH_TO_SHARED_LIBRARY> ...
1114 // The parsers require a single space before and after pc, and two spaces
1115 // after the <RELATIVE_ADDR>. There can be any prefix data before the
1116 // #XX. <RELATIVE_ADDR> has to be a hex number but with no 0x prefix.
1117 os << prefix << StringPrintf("#%02zu pc ", it->num);
1118 if (!it->map) {
1119 os << StringPrintf("%08" PRIxPTR " ???", it->pc);
Christopher Ferris7b5f0cf2013-11-01 15:18:45 -07001120 } else {
Christopher Ferrisa2cee182014-04-16 19:13:59 -07001121 os << StringPrintf("%08" PRIxPTR " ", it->pc - it->map->start)
1122 << it->map->name << " (";
1123 if (!it->func_name.empty()) {
1124 os << it->func_name;
1125 if (it->func_offset != 0) {
1126 os << "+" << it->func_offset;
1127 }
Hiroshi Yamauchi7895d552014-08-28 14:55:56 -07001128 } else if (current_method != nullptr &&
1129 Locks::mutator_lock_->IsSharedHeld(Thread::Current()) &&
1130 current_method->IsWithinQuickCode(it->pc)) {
Brian Carlstrom474cc792014-03-07 14:18:15 -08001131 const void* start_of_code = current_method->GetEntryPointFromQuickCompiledCode();
1132 os << JniLongName(current_method) << "+"
1133 << (it->pc - reinterpret_cast<uintptr_t>(start_of_code));
Kenny Root067d20f2014-03-05 14:57:21 -08001134 } else {
1135 os << "???";
1136 }
Christopher Ferrisa2cee182014-04-16 19:13:59 -07001137 os << ")";
Elliott Hughes46e251b2012-05-22 15:10:45 -07001138 }
Christopher Ferrisa2cee182014-04-16 19:13:59 -07001139 os << "\n";
Elliott Hughes46e251b2012-05-22 15:10:45 -07001140 }
Ian Rogersc5f17732014-06-05 20:48:42 -07001141#endif
Elliott Hughes46e251b2012-05-22 15:10:45 -07001142}
1143
Elliott Hughes058a6de2012-05-24 19:13:02 -07001144#if defined(__APPLE__)
1145
1146// TODO: is there any way to get the kernel stack on Mac OS?
1147void DumpKernelStack(std::ostream&, pid_t, const char*, bool) {}
1148
1149#else
1150
Elliott Hughes46e251b2012-05-22 15:10:45 -07001151void DumpKernelStack(std::ostream& os, pid_t tid, const char* prefix, bool include_count) {
Elliott Hughes12a95022012-05-24 21:41:38 -07001152 if (tid == GetTid()) {
1153 // There's no point showing that we're reading our stack out of /proc!
1154 return;
1155 }
1156
Elliott Hughes46e251b2012-05-22 15:10:45 -07001157 std::string kernel_stack_filename(StringPrintf("/proc/self/task/%d/stack", tid));
1158 std::string kernel_stack;
1159 if (!ReadFileToString(kernel_stack_filename, &kernel_stack)) {
Elliott Hughes058a6de2012-05-24 19:13:02 -07001160 os << prefix << "(couldn't read " << kernel_stack_filename << ")\n";
jeffhaoc4c3ee22012-05-25 16:16:32 -07001161 return;
Elliott Hughes46e251b2012-05-22 15:10:45 -07001162 }
1163
1164 std::vector<std::string> kernel_stack_frames;
1165 Split(kernel_stack, '\n', kernel_stack_frames);
1166 // We skip the last stack frame because it's always equivalent to "[<ffffffff>] 0xffffffff",
1167 // which looking at the source appears to be the kernel's way of saying "that's all, folks!".
1168 kernel_stack_frames.pop_back();
1169 for (size_t i = 0; i < kernel_stack_frames.size(); ++i) {
Brian Carlstrom474cc792014-03-07 14:18:15 -08001170 // Turn "[<ffffffff8109156d>] futex_wait_queue_me+0xcd/0x110"
1171 // into "futex_wait_queue_me+0xcd/0x110".
Elliott Hughes46e251b2012-05-22 15:10:45 -07001172 const char* text = kernel_stack_frames[i].c_str();
1173 const char* close_bracket = strchr(text, ']');
1174 if (close_bracket != NULL) {
1175 text = close_bracket + 2;
1176 }
1177 os << prefix;
1178 if (include_count) {
1179 os << StringPrintf("#%02zd ", i);
1180 }
1181 os << text << "\n";
1182 }
1183}
1184
1185#endif
1186
Brian Carlstroma56fcd62012-02-04 21:23:01 -08001187const char* GetAndroidRoot() {
1188 const char* android_root = getenv("ANDROID_ROOT");
1189 if (android_root == NULL) {
1190 if (OS::DirectoryExists("/system")) {
1191 android_root = "/system";
Brian Carlstroma9f19782011-10-13 00:14:47 -07001192 } else {
Brian Carlstroma56fcd62012-02-04 21:23:01 -08001193 LOG(FATAL) << "ANDROID_ROOT not set and /system does not exist";
1194 return "";
Brian Carlstroma9f19782011-10-13 00:14:47 -07001195 }
1196 }
Brian Carlstroma56fcd62012-02-04 21:23:01 -08001197 if (!OS::DirectoryExists(android_root)) {
1198 LOG(FATAL) << "Failed to find ANDROID_ROOT directory " << android_root;
Brian Carlstroma9f19782011-10-13 00:14:47 -07001199 return "";
1200 }
Brian Carlstroma56fcd62012-02-04 21:23:01 -08001201 return android_root;
1202}
Brian Carlstroma9f19782011-10-13 00:14:47 -07001203
Brian Carlstroma56fcd62012-02-04 21:23:01 -08001204const char* GetAndroidData() {
Alex Lighta59dd802014-07-02 16:28:08 -07001205 std::string error_msg;
1206 const char* dir = GetAndroidDataSafe(&error_msg);
1207 if (dir != nullptr) {
1208 return dir;
1209 } else {
1210 LOG(FATAL) << error_msg;
1211 return "";
1212 }
1213}
1214
1215const char* GetAndroidDataSafe(std::string* error_msg) {
Brian Carlstroma56fcd62012-02-04 21:23:01 -08001216 const char* android_data = getenv("ANDROID_DATA");
1217 if (android_data == NULL) {
1218 if (OS::DirectoryExists("/data")) {
1219 android_data = "/data";
1220 } else {
Alex Lighta59dd802014-07-02 16:28:08 -07001221 *error_msg = "ANDROID_DATA not set and /data does not exist";
1222 return nullptr;
Brian Carlstroma56fcd62012-02-04 21:23:01 -08001223 }
1224 }
1225 if (!OS::DirectoryExists(android_data)) {
Alex Lighta59dd802014-07-02 16:28:08 -07001226 *error_msg = StringPrintf("Failed to find ANDROID_DATA directory %s", android_data);
1227 return nullptr;
Brian Carlstroma56fcd62012-02-04 21:23:01 -08001228 }
1229 return android_data;
1230}
1231
Alex Lighta59dd802014-07-02 16:28:08 -07001232void GetDalvikCache(const char* subdir, const bool create_if_absent, std::string* dalvik_cache,
1233 bool* have_android_data, bool* dalvik_cache_exists) {
1234 CHECK(subdir != nullptr);
1235 std::string error_msg;
1236 const char* android_data = GetAndroidDataSafe(&error_msg);
1237 if (android_data == nullptr) {
1238 *have_android_data = false;
1239 *dalvik_cache_exists = false;
1240 return;
1241 } else {
1242 *have_android_data = true;
1243 }
1244 const std::string dalvik_cache_root(StringPrintf("%s/dalvik-cache/", android_data));
1245 *dalvik_cache = dalvik_cache_root + subdir;
1246 *dalvik_cache_exists = OS::DirectoryExists(dalvik_cache->c_str());
1247 if (create_if_absent && !*dalvik_cache_exists && strcmp(android_data, "/data") != 0) {
1248 // Don't create the system's /data/dalvik-cache/... because it needs special permissions.
1249 *dalvik_cache_exists = ((mkdir(dalvik_cache_root.c_str(), 0700) == 0 || errno == EEXIST) &&
1250 (mkdir(dalvik_cache->c_str(), 0700) == 0 || errno == EEXIST));
1251 }
1252}
1253
Narayan Kamath11d9f062014-04-23 20:24:57 +01001254std::string GetDalvikCacheOrDie(const char* subdir, const bool create_if_absent) {
1255 CHECK(subdir != nullptr);
Brian Carlstrom41ccffd2014-05-06 10:37:30 -07001256 const char* android_data = GetAndroidData();
1257 const std::string dalvik_cache_root(StringPrintf("%s/dalvik-cache/", android_data));
Narayan Kamath11d9f062014-04-23 20:24:57 +01001258 const std::string dalvik_cache = dalvik_cache_root + subdir;
1259 if (create_if_absent && !OS::DirectoryExists(dalvik_cache.c_str())) {
Brian Carlstrom41ccffd2014-05-06 10:37:30 -07001260 // Don't create the system's /data/dalvik-cache/... because it needs special permissions.
1261 if (strcmp(android_data, "/data") != 0) {
Narayan Kamath11d9f062014-04-23 20:24:57 +01001262 int result = mkdir(dalvik_cache_root.c_str(), 0700);
Narayan Kamathef204fa2014-04-30 17:25:23 +01001263 if (result != 0 && errno != EEXIST) {
Narayan Kamath11d9f062014-04-23 20:24:57 +01001264 PLOG(FATAL) << "Failed to create dalvik-cache directory " << dalvik_cache_root;
1265 return "";
1266 }
1267 result = mkdir(dalvik_cache.c_str(), 0700);
1268 if (result != 0) {
1269 PLOG(FATAL) << "Failed to create dalvik-cache directory " << dalvik_cache;
Brian Carlstroma9f19782011-10-13 00:14:47 -07001270 return "";
1271 }
1272 } else {
Brian Carlstrom7675e162013-06-10 16:18:04 -07001273 LOG(FATAL) << "Failed to find dalvik-cache directory " << dalvik_cache;
Brian Carlstroma9f19782011-10-13 00:14:47 -07001274 return "";
1275 }
1276 }
Brian Carlstrom7675e162013-06-10 16:18:04 -07001277 return dalvik_cache;
Brian Carlstroma9f19782011-10-13 00:14:47 -07001278}
1279
Alex Lighta59dd802014-07-02 16:28:08 -07001280bool GetDalvikCacheFilename(const char* location, const char* cache_location,
1281 std::string* filename, std::string* error_msg) {
Ian Rogerse6060102013-05-16 12:01:04 -07001282 if (location[0] != '/') {
Alex Lighta59dd802014-07-02 16:28:08 -07001283 *error_msg = StringPrintf("Expected path in location to be absolute: %s", location);
1284 return false;
Ian Rogerse6060102013-05-16 12:01:04 -07001285 }
Ian Rogers8d31bbd2013-10-13 10:44:14 -07001286 std::string cache_file(&location[1]); // skip leading slash
Alex Light6e183f22014-07-18 14:57:04 -07001287 if (!EndsWith(location, ".dex") && !EndsWith(location, ".art") && !EndsWith(location, ".oat")) {
Brian Carlstrom30e2ea42013-06-19 23:25:37 -07001288 cache_file += "/";
1289 cache_file += DexFile::kClassesDex;
1290 }
Brian Carlstromb7bbba42011-10-13 14:58:47 -07001291 std::replace(cache_file.begin(), cache_file.end(), '/', '@');
Alex Lighta59dd802014-07-02 16:28:08 -07001292 *filename = StringPrintf("%s/%s", cache_location, cache_file.c_str());
1293 return true;
1294}
1295
1296std::string GetDalvikCacheFilenameOrDie(const char* location, const char* cache_location) {
1297 std::string ret;
1298 std::string error_msg;
1299 if (!GetDalvikCacheFilename(location, cache_location, &ret, &error_msg)) {
1300 LOG(FATAL) << error_msg;
1301 }
1302 return ret;
Brian Carlstromb7bbba42011-10-13 14:58:47 -07001303}
1304
Brian Carlstrom2afe4942014-05-19 10:25:33 -07001305static void InsertIsaDirectory(const InstructionSet isa, std::string* filename) {
Brian Carlstrom0e12bdc2014-05-14 17:44:28 -07001306 // in = /foo/bar/baz
1307 // out = /foo/bar/<isa>/baz
1308 size_t pos = filename->rfind('/');
1309 CHECK_NE(pos, std::string::npos) << *filename << " " << isa;
1310 filename->insert(pos, "/", 1);
1311 filename->insert(pos + 1, GetInstructionSetString(isa));
1312}
1313
1314std::string GetSystemImageFilename(const char* location, const InstructionSet isa) {
1315 // location = /system/framework/boot.art
1316 // filename = /system/framework/<isa>/boot.art
1317 std::string filename(location);
Brian Carlstrom2afe4942014-05-19 10:25:33 -07001318 InsertIsaDirectory(isa, &filename);
Brian Carlstrom0e12bdc2014-05-14 17:44:28 -07001319 return filename;
1320}
1321
1322std::string DexFilenameToOdexFilename(const std::string& location, const InstructionSet isa) {
1323 // location = /foo/bar/baz.jar
1324 // odex_location = /foo/bar/<isa>/baz.odex
Andreas Gampe833a4852014-05-21 18:46:59 -07001325
Brian Carlstrom0e12bdc2014-05-14 17:44:28 -07001326 CHECK_GE(location.size(), 4U) << location; // must be at least .123
1327 std::string odex_location(location);
Brian Carlstrom2afe4942014-05-19 10:25:33 -07001328 InsertIsaDirectory(isa, &odex_location);
Brian Carlstrom0e12bdc2014-05-14 17:44:28 -07001329 size_t dot_index = odex_location.size() - 3 - 1; // 3=dex or zip or apk
1330 CHECK_EQ('.', odex_location[dot_index]) << location;
1331 odex_location.resize(dot_index + 1);
1332 CHECK_EQ('.', odex_location[odex_location.size()-1]) << location << " " << odex_location;
1333 odex_location += "odex";
1334 return odex_location;
1335}
1336
Brian Carlstrom7c3d13a2013-09-04 17:15:11 -07001337bool IsZipMagic(uint32_t magic) {
1338 return (('P' == ((magic >> 0) & 0xff)) &&
1339 ('K' == ((magic >> 8) & 0xff)));
jeffhao262bf462011-10-20 18:36:32 -07001340}
1341
Brian Carlstrom7c3d13a2013-09-04 17:15:11 -07001342bool IsDexMagic(uint32_t magic) {
1343 return DexFile::IsMagicValid(reinterpret_cast<const byte*>(&magic));
Brian Carlstrom7a967b32012-03-28 15:23:10 -07001344}
1345
Brian Carlstrom7c3d13a2013-09-04 17:15:11 -07001346bool IsOatMagic(uint32_t magic) {
1347 return (memcmp(reinterpret_cast<const byte*>(magic),
1348 OatHeader::kOatMagic,
1349 sizeof(OatHeader::kOatMagic)) == 0);
jeffhao262bf462011-10-20 18:36:32 -07001350}
1351
Brian Carlstrom6449c622014-02-10 23:48:36 -08001352bool Exec(std::vector<std::string>& arg_vector, std::string* error_msg) {
1353 const std::string command_line(Join(arg_vector, ' '));
1354
1355 CHECK_GE(arg_vector.size(), 1U) << command_line;
1356
1357 // Convert the args to char pointers.
1358 const char* program = arg_vector[0].c_str();
1359 std::vector<char*> args;
Brian Carlstrom35d8b8e2014-02-25 10:51:11 -08001360 for (size_t i = 0; i < arg_vector.size(); ++i) {
1361 const std::string& arg = arg_vector[i];
1362 char* arg_str = const_cast<char*>(arg.c_str());
1363 CHECK(arg_str != nullptr) << i;
1364 args.push_back(arg_str);
Brian Carlstrom6449c622014-02-10 23:48:36 -08001365 }
1366 args.push_back(NULL);
1367
1368 // fork and exec
1369 pid_t pid = fork();
1370 if (pid == 0) {
1371 // no allocation allowed between fork and exec
1372
1373 // change process groups, so we don't get reaped by ProcessManager
1374 setpgid(0, 0);
1375
1376 execv(program, &args[0]);
1377
Brian Carlstrom13db9aa2014-02-27 12:44:32 -08001378 PLOG(ERROR) << "Failed to execv(" << command_line << ")";
1379 exit(1);
Brian Carlstrom6449c622014-02-10 23:48:36 -08001380 } else {
1381 if (pid == -1) {
1382 *error_msg = StringPrintf("Failed to execv(%s) because fork failed: %s",
1383 command_line.c_str(), strerror(errno));
1384 return false;
1385 }
1386
1387 // wait for subprocess to finish
1388 int status;
1389 pid_t got_pid = TEMP_FAILURE_RETRY(waitpid(pid, &status, 0));
1390 if (got_pid != pid) {
1391 *error_msg = StringPrintf("Failed after fork for execv(%s) because waitpid failed: "
1392 "wanted %d, got %d: %s",
1393 command_line.c_str(), pid, got_pid, strerror(errno));
1394 return false;
1395 }
1396 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
1397 *error_msg = StringPrintf("Failed execv(%s) because non-0 exit status",
1398 command_line.c_str());
1399 return false;
1400 }
1401 }
1402 return true;
1403}
1404
Tong Shen547cdfd2014-08-05 01:54:19 -07001405void EncodeUnsignedLeb128(uint32_t data, std::vector<uint8_t>* dst) {
Yevgeny Roubane3ea8382014-08-08 16:29:38 +07001406 Leb128Encoder(dst).PushBackUnsigned(data);
Tong Shen547cdfd2014-08-05 01:54:19 -07001407}
1408
1409void EncodeSignedLeb128(int32_t data, std::vector<uint8_t>* dst) {
Yevgeny Roubane3ea8382014-08-08 16:29:38 +07001410 Leb128Encoder(dst).PushBackSigned(data);
Tong Shen547cdfd2014-08-05 01:54:19 -07001411}
1412
1413void PushWord(std::vector<uint8_t>* buf, int data) {
1414 buf->push_back(data & 0xff);
1415 buf->push_back((data >> 8) & 0xff);
1416 buf->push_back((data >> 16) & 0xff);
1417 buf->push_back((data >> 24) & 0xff);
1418}
1419
Elliott Hughes42ee1422011-09-06 12:33:32 -07001420} // namespace art