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