Merge "Remove liblog's rate limiting"
diff --git a/liblog/Android.bp b/liblog/Android.bp
index e213e90..5c6ee59 100644
--- a/liblog/Android.bp
+++ b/liblog/Android.bp
@@ -19,7 +19,6 @@
"config_write.cpp",
"log_event_list.cpp",
"log_event_write.cpp",
- "log_ratelimit.cpp",
"logger_lock.cpp",
"logger_name.cpp",
"logger_read.cpp",
diff --git a/liblog/include/log/log.h b/liblog/include/log/log.h
index df5affb..f63f480 100644
--- a/liblog/include/log/log.h
+++ b/liblog/include/log/log.h
@@ -165,33 +165,6 @@
*/
void __android_log_close(void);
-/*
- * if last is NULL, caller _must_ provide a consistent value for seconds.
- *
- * Return -1 if we can not acquire a lock, which below will permit the logging,
- * error on allowing a log message through.
- */
-int __android_log_ratelimit(time_t seconds, time_t* last);
-
-/*
- * Usage:
- *
- * // Global default and state
- * IF_ALOG_RATELIMIT() {
- * ALOG*(...);
- * }
- *
- * // local state, 10 seconds ratelimit
- * static time_t local_state;
- * IF_ALOG_RATELIMIT_LOCAL(10, &local_state) {
- * ALOG*(...);
- * }
- */
-
-#define IF_ALOG_RATELIMIT() if (__android_log_ratelimit(0, NULL) > 0)
-#define IF_ALOG_RATELIMIT_LOCAL(seconds, state) \
- if (__android_log_ratelimit(seconds, state) > 0)
-
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
diff --git a/liblog/log_ratelimit.cpp b/liblog/log_ratelimit.cpp
deleted file mode 100644
index 33770dd..0000000
--- a/liblog/log_ratelimit.cpp
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
-** Copyright 2016, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-** http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#include <errno.h>
-#include <pthread.h>
-#include <time.h>
-
-#include <log/log.h>
-
-#include "log_portability.h"
-
-// Global default if 'last' argument in __android_log_ratelimit is NULL
-static time_t g_last_clock;
-// Global above can not deal well with callers playing games with the
-// seconds argument, so we will also hold on to the maximum value
-// ever provided and use that to gain consistency. If the caller
-// provides their own 'last' argument, then they can play such games
-// of varying the 'seconds' argument to their pleasure.
-static time_t g_last_seconds;
-static const time_t last_seconds_default = 10;
-static const time_t last_seconds_max = 24 * 60 * 60; // maximum of a day
-static const time_t last_seconds_min = 2; // granularity
-// Lock to protect last_clock and last_seconds, but also 'last'
-// argument (not NULL) as supplied to __android_log_ratelimit.
-static pthread_mutex_t lock_ratelimit = PTHREAD_MUTEX_INITIALIZER;
-
-// if last is NULL, caller _must_ provide a consistent value for
-// seconds, otherwise we will take the maximum ever issued and hold
-// on to that. Preserves value of non-zero errno. Return -1 if we
-// can not acquire a lock, 0 if we are not to log a message, and 1
-// if we are ok to log a message. Caller should check > 0 for true.
-LIBLOG_ABI_PUBLIC int __android_log_ratelimit(time_t seconds, time_t* last) {
- int save_errno = errno;
-
- // Two reasons for trylock failure:
- // 1. In a signal handler. Must prevent deadlock
- // 2. Too many threads calling __android_log_ratelimit.
- // Bonus to not print if they race here because that
- // dovetails the goal of ratelimiting. One may print
- // and the others will wait their turn ...
- if (pthread_mutex_trylock(&lock_ratelimit)) {
- if (save_errno) errno = save_errno;
- return -1;
- }
-
- if (seconds == 0) {
- seconds = last_seconds_default;
- } else if (seconds < last_seconds_min) {
- seconds = last_seconds_min;
- } else if (seconds > last_seconds_max) {
- seconds = last_seconds_max;
- }
-
- if (!last) {
- if (g_last_seconds > seconds) {
- seconds = g_last_seconds;
- } else if (g_last_seconds < seconds) {
- g_last_seconds = seconds;
- }
- last = &g_last_clock;
- }
-
- time_t now = time(NULL);
- if ((now == (time_t)-1) || ((*last + seconds) > now)) {
- pthread_mutex_unlock(&lock_ratelimit);
- if (save_errno) errno = save_errno;
- return 0;
- }
- *last = now;
- pthread_mutex_unlock(&lock_ratelimit);
- if (save_errno) errno = save_errno;
- return 1;
-}
diff --git a/liblog/tests/liblog_test.cpp b/liblog/tests/liblog_test.cpp
index 2d0fc9b..83f0fa9 100644
--- a/liblog/tests/liblog_test.cpp
+++ b/liblog/tests/liblog_test.cpp
@@ -3160,41 +3160,6 @@
}
#endif // USING_LOGGER_DEFAULT
-#ifdef USING_LOGGER_DEFAULT // Do not retest ratelimit
-TEST(liblog, __android_log_ratelimit) {
- time_t state = 0;
-
- errno = 42;
- // Prime
- __android_log_ratelimit(3, &state);
- EXPECT_EQ(errno, 42);
- // Check
- EXPECT_FALSE(__android_log_ratelimit(3, &state));
- sleep(1);
- EXPECT_FALSE(__android_log_ratelimit(3, &state));
- sleep(4);
- EXPECT_TRUE(__android_log_ratelimit(3, &state));
- sleep(5);
- EXPECT_TRUE(__android_log_ratelimit(3, &state));
-
- // API checks
- IF_ALOG_RATELIMIT_LOCAL(3, &state) {
- EXPECT_FALSE(0 != "IF_ALOG_RATELIMIT_LOCAL(3, &state)");
- }
-
- IF_ALOG_RATELIMIT() {
- ;
- }
- else {
- EXPECT_TRUE(0 == "IF_ALOG_RATELIMIT()");
- }
- IF_ALOG_RATELIMIT() {
- EXPECT_FALSE(0 != "IF_ALOG_RATELIMIT()");
- }
- // Do not test default seconds, to allow liblog to tune freely
-}
-#endif // USING_LOGGER_DEFAULT
-
#ifdef USING_LOGGER_DEFAULT // Do not retest event mapping functionality
TEST(liblog, android_lookupEventTagNum) {
#ifdef __ANDROID__