ResourceUsageThread.h [plain text]
#pragma once
#if ENABLE(RESOURCE_USAGE)
#include "ResourceUsageData.h"
#include <array>
#include <functional>
#include <wtf/Condition.h>
#include <wtf/HashMap.h>
#include <wtf/Lock.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/Noncopyable.h>
#include <wtf/Threading.h>
#if OS(DARWIN)
#include <mach/mach.h>
#endif
namespace JSC {
class VM;
}
namespace WebCore {
enum ResourceUsageCollectionMode {
None = 0,
CPU = 1 << 0,
Memory = 1 << 1,
All = CPU | Memory,
};
class ResourceUsageThread {
WTF_MAKE_NONCOPYABLE(ResourceUsageThread);
public:
static void addObserver(void* key, ResourceUsageCollectionMode, std::function<void (const ResourceUsageData&)>);
static void removeObserver(void* key);
private:
friend NeverDestroyed<ResourceUsageThread>;
ResourceUsageThread();
static ResourceUsageThread& singleton();
void waitUntilObservers();
void notifyObservers(ResourceUsageData&&);
void recomputeCollectionMode();
void createThreadIfNeeded();
NO_RETURN void threadBody();
void platformSaveStateBeforeStarting();
void platformCollectCPUData(JSC::VM*, ResourceUsageData&);
void platformCollectMemoryData(JSC::VM*, ResourceUsageData&);
RefPtr<Thread> m_thread;
Lock m_lock;
Condition m_condition;
HashMap<void*, std::pair<ResourceUsageCollectionMode, std::function<void (const ResourceUsageData&)>>> m_observers;
ResourceUsageCollectionMode m_collectionMode { None };
JSC::VM* m_vm { nullptr };
#if ENABLE(SAMPLING_PROFILER) && OS(DARWIN)
mach_port_t m_samplingProfilerMachThread { MACH_PORT_NULL };
#endif
};
}
#endif // ENABLE(RESOURCE_USAGE)