103 lines
2.4 KiB
C++
103 lines
2.4 KiB
C++
//===-- HostThreadMacOSX.cpp ------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Host/macosx/HostThreadMacOSX.h"
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#include "lldb/Host/Host.h"
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#include <CoreFoundation/CoreFoundation.h>
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#include <Foundation/Foundation.h>
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#include <objc/objc-auto.h>
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#include <pthread.h>
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using namespace lldb_private;
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namespace
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{
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pthread_once_t g_thread_create_once = PTHREAD_ONCE_INIT;
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pthread_key_t g_thread_create_key = 0;
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class MacOSXDarwinThread
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{
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public:
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MacOSXDarwinThread()
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: m_pool(nil)
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{
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// Register our thread with the collector if garbage collection is enabled.
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if (objc_collectingEnabled())
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{
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#if MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_5
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// On Leopard and earlier there is no way objc_registerThreadWithCollector
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// function, so we do it manually.
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auto_zone_register_thread(auto_zone());
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#else
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// On SnowLeopard and later we just call the thread registration function.
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objc_registerThreadWithCollector();
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#endif
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}
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else
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{
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m_pool = [[NSAutoreleasePool alloc] init];
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}
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}
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~MacOSXDarwinThread()
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{
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if (m_pool)
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{
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[m_pool drain];
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m_pool = nil;
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}
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}
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static void
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PThreadDestructor(void *v)
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{
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if (v)
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delete static_cast<MacOSXDarwinThread *>(v);
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::pthread_setspecific(g_thread_create_key, NULL);
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}
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protected:
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NSAutoreleasePool *m_pool;
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private:
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DISALLOW_COPY_AND_ASSIGN(MacOSXDarwinThread);
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};
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void
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InitThreadCreated()
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{
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::pthread_key_create(&g_thread_create_key, MacOSXDarwinThread::PThreadDestructor);
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}
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} // namespace
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HostThreadMacOSX::HostThreadMacOSX()
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: HostThreadPosix()
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{
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}
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HostThreadMacOSX::HostThreadMacOSX(lldb::thread_t thread)
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: HostThreadPosix(thread)
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{
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}
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lldb::thread_result_t
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HostThreadMacOSX::ThreadCreateTrampoline(lldb::thread_arg_t arg)
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{
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::pthread_once(&g_thread_create_once, InitThreadCreated);
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if (g_thread_create_key)
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{
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::pthread_setspecific(g_thread_create_key, new MacOSXDarwinThread());
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}
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return HostThreadPosix::ThreadCreateTrampoline(arg);
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}
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