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-rw-r--r--js/src/threading/posix/PosixThread.cpp132
1 files changed, 132 insertions, 0 deletions
diff --git a/js/src/threading/posix/PosixThread.cpp b/js/src/threading/posix/PosixThread.cpp
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+++ b/js/src/threading/posix/PosixThread.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Assertions.h"
+
+#include "js/Utility.h"
+#include "threading/posix/ThreadPlatformData.h"
+#include "threading/Thread.h"
+
+namespace js {
+
+inline ThreadId::PlatformData* ThreadId::platformData() {
+ static_assert(sizeof platformData_ >= sizeof(PlatformData),
+ "platformData_ is too small");
+ return reinterpret_cast<PlatformData*>(platformData_);
+}
+
+inline const ThreadId::PlatformData* ThreadId::platformData() const {
+ static_assert(sizeof platformData_ >= sizeof(PlatformData),
+ "platformData_ is too small");
+ return reinterpret_cast<const PlatformData*>(platformData_);
+}
+
+ThreadId::ThreadId() { platformData()->hasThread = false; }
+
+ThreadId::operator bool() const { return platformData()->hasThread; }
+
+bool ThreadId::operator==(const ThreadId& aOther) const {
+ const PlatformData& self = *platformData();
+ const PlatformData& other = *aOther.platformData();
+ return (!self.hasThread && !other.hasThread) ||
+ (self.hasThread == other.hasThread &&
+ pthread_equal(self.ptThread, other.ptThread));
+}
+
+bool Thread::create(void* (*aMain)(void*), void* aArg) {
+ MOZ_RELEASE_ASSERT(!joinable());
+
+ if (oom::ShouldFailWithOOM()) {
+ return false;
+ }
+
+ pthread_attr_t attrs;
+ int r = pthread_attr_init(&attrs);
+ MOZ_RELEASE_ASSERT(!r);
+ if (options_.stackSize()) {
+ r = pthread_attr_setstacksize(&attrs, options_.stackSize());
+ MOZ_RELEASE_ASSERT(!r);
+ }
+
+ r = pthread_create(&id_.platformData()->ptThread, &attrs, aMain, aArg);
+ if (r) {
+ // On either Windows or POSIX we can't be sure if id_ was initialised. So
+ // reset it manually.
+ id_ = ThreadId();
+ return false;
+ }
+ id_.platformData()->hasThread = true;
+ return true;
+}
+
+void Thread::join() {
+ MOZ_RELEASE_ASSERT(joinable());
+ int r = pthread_join(id_.platformData()->ptThread, nullptr);
+ MOZ_RELEASE_ASSERT(!r);
+ id_ = ThreadId();
+}
+
+void Thread::detach() {
+ MOZ_RELEASE_ASSERT(joinable());
+ int r = pthread_detach(id_.platformData()->ptThread);
+ MOZ_RELEASE_ASSERT(!r);
+ id_ = ThreadId();
+}
+
+ThreadId ThreadId::ThisThreadId() {
+ ThreadId id;
+ id.platformData()->ptThread = pthread_self();
+ id.platformData()->hasThread = true;
+ MOZ_RELEASE_ASSERT(id != ThreadId());
+ return id;
+}
+
+void ThisThread::SetName(const char* name) {
+ MOZ_RELEASE_ASSERT(name);
+
+#if (defined(__APPLE__) && defined(__MACH__)) || defined(__linux__)
+ // On linux and OS X the name may not be longer than 16 bytes, including
+ // the null terminator. Truncate the name to 15 characters.
+ char nameBuf[16];
+
+ strncpy(nameBuf, name, sizeof nameBuf - 1);
+ nameBuf[sizeof nameBuf - 1] = '\0';
+ name = nameBuf;
+#endif
+
+ int rv;
+#ifdef XP_DARWIN
+ rv = pthread_setname_np(name);
+#elif defined(__DragonFly__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+ pthread_set_name_np(pthread_self(), name);
+ rv = 0;
+#elif defined(__NetBSD__)
+ rv = pthread_setname_np(pthread_self(), "%s", (void*)name);
+#else
+ rv = pthread_setname_np(pthread_self(), name);
+#endif
+ MOZ_RELEASE_ASSERT(!rv);
+}
+
+void ThisThread::GetName(char* nameBuffer, size_t len) {
+ MOZ_RELEASE_ASSERT(len >= 16);
+
+ int rv = -1;
+#ifdef HAVE_PTHREAD_GETNAME_NP
+ rv = pthread_getname_np(pthread_self(), nameBuffer, len);
+#elif defined(HAVE_PTHREAD_GET_NAME_NP)
+ pthread_get_name_np(pthread_self(), nameBuffer, len);
+ rv = 0;
+#elif defined(__linux__)
+ rv = prctl(PR_GET_NAME, reinterpret_cast<unsigned long>(nameBuffer));
+#endif
+
+ if (rv) {
+ nameBuffer[0] = '\0';
+ }
+}
+
+} // namespace js