GCActivityCallbackCF.cpp [plain text]
#include "config.h"
#include "GCActivityCallback.h"
#include "APIShims.h"
#include "Heap.h"
#include "JSGlobalData.h"
#include "JSLock.h"
#include "JSObject.h"
#include "ScopeChain.h"
#include <wtf/RetainPtr.h>
#include <wtf/WTFThreadData.h>
#if !USE(CF)
#error "This file should only be used on CF platforms."
#endif
namespace JSC {
struct DefaultGCActivityCallbackPlatformData {
static void trigger(CFRunLoopTimerRef, void *info);
RetainPtr<CFRunLoopTimerRef> timer;
RetainPtr<CFRunLoopRef> runLoop;
CFRunLoopTimerContext context;
};
const CFTimeInterval decade = 60 * 60 * 24 * 365 * 10;
const CFTimeInterval triggerInterval = 2;
void DefaultGCActivityCallbackPlatformData::trigger(CFRunLoopTimerRef timer, void *info)
{
Heap* heap = static_cast<Heap*>(info);
APIEntryShim shim(heap->globalData());
heap->collectAllGarbage();
CFRunLoopTimerSetNextFireDate(timer, CFAbsoluteTimeGetCurrent() + decade);
}
DefaultGCActivityCallback::DefaultGCActivityCallback(Heap* heap)
{
commonConstructor(heap, CFRunLoopGetCurrent());
}
DefaultGCActivityCallback::DefaultGCActivityCallback(Heap* heap, CFRunLoopRef runLoop)
{
commonConstructor(heap, runLoop);
}
DefaultGCActivityCallback::~DefaultGCActivityCallback()
{
CFRunLoopRemoveTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes);
CFRunLoopTimerInvalidate(d->timer.get());
d->context.info = 0;
d->runLoop = 0;
d->timer = 0;
}
void DefaultGCActivityCallback::commonConstructor(Heap* heap, CFRunLoopRef runLoop)
{
d = adoptPtr(new DefaultGCActivityCallbackPlatformData);
memset(&d->context, 0, sizeof(CFRunLoopTimerContext));
d->context.info = heap;
d->runLoop = runLoop;
d->timer.adoptCF(CFRunLoopTimerCreate(0, decade, decade, 0, 0, DefaultGCActivityCallbackPlatformData::trigger, &d->context));
CFRunLoopAddTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes);
}
void DefaultGCActivityCallback::operator()()
{
CFRunLoopTimerSetNextFireDate(d->timer.get(), CFAbsoluteTimeGetCurrent() + triggerInterval);
}
void DefaultGCActivityCallback::synchronize()
{
if (CFRunLoopGetCurrent() == d->runLoop.get())
return;
CFRunLoopRemoveTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes);
d->runLoop = CFRunLoopGetCurrent();
CFRunLoopAddTimer(d->runLoop.get(), d->timer.get(), kCFRunLoopCommonModes);
}
}