Upgrade to 3.29
Update V8 to 3.29.88.17 and update makefiles to support building on
all the relevant platforms.
Bug: 17370214
Change-Id: Ia3407c157fd8d72a93e23d8318ccaf6ecf77fa4e
diff --git a/src/base/platform/semaphore.cc b/src/base/platform/semaphore.cc
new file mode 100644
index 0000000..0679c00
--- /dev/null
+++ b/src/base/platform/semaphore.cc
@@ -0,0 +1,204 @@
+// Copyright 2013 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/base/platform/semaphore.h"
+
+#if V8_OS_MACOSX
+#include <mach/mach_init.h>
+#include <mach/task.h>
+#endif
+
+#include <errno.h>
+
+#include "src/base/logging.h"
+#include "src/base/platform/elapsed-timer.h"
+#include "src/base/platform/time.h"
+
+namespace v8 {
+namespace base {
+
+#if V8_OS_MACOSX
+
+Semaphore::Semaphore(int count) {
+ kern_return_t result = semaphore_create(
+ mach_task_self(), &native_handle_, SYNC_POLICY_FIFO, count);
+ DCHECK_EQ(KERN_SUCCESS, result);
+ USE(result);
+}
+
+
+Semaphore::~Semaphore() {
+ kern_return_t result = semaphore_destroy(mach_task_self(), native_handle_);
+ DCHECK_EQ(KERN_SUCCESS, result);
+ USE(result);
+}
+
+
+void Semaphore::Signal() {
+ kern_return_t result = semaphore_signal(native_handle_);
+ DCHECK_EQ(KERN_SUCCESS, result);
+ USE(result);
+}
+
+
+void Semaphore::Wait() {
+ while (true) {
+ kern_return_t result = semaphore_wait(native_handle_);
+ if (result == KERN_SUCCESS) return; // Semaphore was signalled.
+ DCHECK_EQ(KERN_ABORTED, result);
+ }
+}
+
+
+bool Semaphore::WaitFor(const TimeDelta& rel_time) {
+ TimeTicks now = TimeTicks::Now();
+ TimeTicks end = now + rel_time;
+ while (true) {
+ mach_timespec_t ts;
+ if (now >= end) {
+ // Return immediately if semaphore was not signalled.
+ ts.tv_sec = 0;
+ ts.tv_nsec = 0;
+ } else {
+ ts = (end - now).ToMachTimespec();
+ }
+ kern_return_t result = semaphore_timedwait(native_handle_, ts);
+ if (result == KERN_SUCCESS) return true; // Semaphore was signalled.
+ if (result == KERN_OPERATION_TIMED_OUT) return false; // Timeout.
+ DCHECK_EQ(KERN_ABORTED, result);
+ now = TimeTicks::Now();
+ }
+}
+
+#elif V8_OS_POSIX
+
+Semaphore::Semaphore(int count) {
+ DCHECK(count >= 0);
+ int result = sem_init(&native_handle_, 0, count);
+ DCHECK_EQ(0, result);
+ USE(result);
+}
+
+
+Semaphore::~Semaphore() {
+ int result = sem_destroy(&native_handle_);
+ DCHECK_EQ(0, result);
+ USE(result);
+}
+
+
+void Semaphore::Signal() {
+ int result = sem_post(&native_handle_);
+ DCHECK_EQ(0, result);
+ USE(result);
+}
+
+
+void Semaphore::Wait() {
+ while (true) {
+ int result = sem_wait(&native_handle_);
+ if (result == 0) return; // Semaphore was signalled.
+ // Signal caused spurious wakeup.
+ DCHECK_EQ(-1, result);
+ DCHECK_EQ(EINTR, errno);
+ }
+}
+
+
+bool Semaphore::WaitFor(const TimeDelta& rel_time) {
+#if V8_OS_NACL
+ // PNaCL doesn't support sem_timedwait, do ugly busy waiting.
+ ElapsedTimer timer;
+ timer.Start();
+ do {
+ int result = sem_trywait(&native_handle_);
+ if (result == 0) return true;
+ DCHECK(errno == EAGAIN || errno == EINTR);
+ } while (!timer.HasExpired(rel_time));
+ return false;
+#else
+ // Compute the time for end of timeout.
+ const Time time = Time::NowFromSystemTime() + rel_time;
+ const struct timespec ts = time.ToTimespec();
+
+ // Wait for semaphore signalled or timeout.
+ while (true) {
+ int result = sem_timedwait(&native_handle_, &ts);
+ if (result == 0) return true; // Semaphore was signalled.
+#if V8_LIBC_GLIBC && !V8_GLIBC_PREREQ(2, 4)
+ if (result > 0) {
+ // sem_timedwait in glibc prior to 2.3.4 returns the errno instead of -1.
+ errno = result;
+ result = -1;
+ }
+#endif
+ if (result == -1 && errno == ETIMEDOUT) {
+ // Timed out while waiting for semaphore.
+ return false;
+ }
+ // Signal caused spurious wakeup.
+ DCHECK_EQ(-1, result);
+ DCHECK_EQ(EINTR, errno);
+ }
+#endif
+}
+
+#elif V8_OS_WIN
+
+Semaphore::Semaphore(int count) {
+ DCHECK(count >= 0);
+ native_handle_ = ::CreateSemaphoreA(NULL, count, 0x7fffffff, NULL);
+ DCHECK(native_handle_ != NULL);
+}
+
+
+Semaphore::~Semaphore() {
+ BOOL result = CloseHandle(native_handle_);
+ DCHECK(result);
+ USE(result);
+}
+
+
+void Semaphore::Signal() {
+ LONG dummy;
+ BOOL result = ReleaseSemaphore(native_handle_, 1, &dummy);
+ DCHECK(result);
+ USE(result);
+}
+
+
+void Semaphore::Wait() {
+ DWORD result = WaitForSingleObject(native_handle_, INFINITE);
+ DCHECK(result == WAIT_OBJECT_0);
+ USE(result);
+}
+
+
+bool Semaphore::WaitFor(const TimeDelta& rel_time) {
+ TimeTicks now = TimeTicks::Now();
+ TimeTicks end = now + rel_time;
+ while (true) {
+ int64_t msec = (end - now).InMilliseconds();
+ if (msec >= static_cast<int64_t>(INFINITE)) {
+ DWORD result = WaitForSingleObject(native_handle_, INFINITE - 1);
+ if (result == WAIT_OBJECT_0) {
+ return true;
+ }
+ DCHECK(result == WAIT_TIMEOUT);
+ now = TimeTicks::Now();
+ } else {
+ DWORD result = WaitForSingleObject(
+ native_handle_, (msec < 0) ? 0 : static_cast<DWORD>(msec));
+ if (result == WAIT_TIMEOUT) {
+ return false;
+ }
+ DCHECK(result == WAIT_OBJECT_0);
+ return true;
+ }
+ }
+}
+
+#endif // V8_OS_MACOSX
+
+} } // namespace v8::base