ResourceUsageThreadWin.cpp [plain text]
#include "config.h"
#include "ResourceUsageThread.h"
#if ENABLE(RESOURCE_USAGE)
#include <JavaScriptCore/GCActivityCallback.h>
#include <JavaScriptCore/VM.h>
#include <psapi.h>
namespace WebCore {
void ResourceUsageThread::platformSaveStateBeforeStarting()
{
}
static uint64_t fileTimeToUint64(FILETIME ft)
{
ULARGE_INTEGER u;
u.LowPart = ft.dwLowDateTime;
u.HighPart = ft.dwHighDateTime;
return u.QuadPart;
}
static bool getCurrentCpuTime(uint64_t& nowTime, uint64_t& userTime, uint64_t& kernelTime)
{
FILETIME creationFileTime, exitFileTime, kernelFileTime, userFileTime;
if (!GetProcessTimes(GetCurrentProcess(), &creationFileTime, &exitFileTime, &kernelFileTime, &userFileTime))
return false;
FILETIME nowFileTime;
GetSystemTimeAsFileTime(&nowFileTime);
nowTime = fileTimeToUint64(nowFileTime);
userTime = fileTimeToUint64(userFileTime);
kernelTime = fileTimeToUint64(kernelFileTime);
return true;
}
static float cpuUsage()
{
static int numberOfProcessors = 0;
static uint64_t lastTime = 0;
static uint64_t lastKernelTime = 0;
static uint64_t lastUserTime = 0;
if (!lastTime) {
SYSTEM_INFO systemInfo;
GetSystemInfo(&systemInfo);
numberOfProcessors = systemInfo.dwNumberOfProcessors;
getCurrentCpuTime(lastTime, lastKernelTime, lastUserTime);
return 0;
}
uint64_t nowTime, kernelTime, userTime;
if (!getCurrentCpuTime(nowTime, kernelTime, userTime))
return 0;
uint64_t elapsed = nowTime - lastTime;
uint64_t totalCPUTime = (kernelTime - lastKernelTime);
totalCPUTime += (userTime - lastUserTime);
lastTime = nowTime;
lastKernelTime = kernelTime;
lastUserTime = userTime;
float usage = (100.0 * totalCPUTime) / elapsed / numberOfProcessors;
return clampTo<float>(usage, 0, 100);
}
static size_t memoryUsage()
{
PROCESS_MEMORY_COUNTERS_EX pmc;
if (GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc)))
return pmc.PrivateUsage;
return 0;
}
void ResourceUsageThread::platformCollectCPUData(JSC::VM*, ResourceUsageData& data)
{
data.cpu = cpuUsage();
data.cpuExcludingDebuggerThreads = data.cpu;
}
void ResourceUsageThread::platformCollectMemoryData(JSC::VM* vm, ResourceUsageData& data)
{
data.totalDirtySize = memoryUsage();
size_t currentGCHeapCapacity = vm->heap.blockBytesAllocated();
size_t currentGCOwnedExtra = vm->heap.extraMemorySize();
size_t currentGCOwnedExternal = vm->heap.externalMemorySize();
RELEASE_ASSERT(currentGCOwnedExternal <= currentGCOwnedExtra);
data.categories[MemoryCategory::GCHeap].dirtySize = currentGCHeapCapacity;
data.categories[MemoryCategory::GCOwned].dirtySize = currentGCOwnedExtra - currentGCOwnedExternal;
data.categories[MemoryCategory::GCOwned].externalSize = currentGCOwnedExternal;
data.totalExternalSize = currentGCOwnedExternal;
data.timeOfNextEdenCollection = data.timestamp + vm->heap.edenActivityCallback()->timeUntilFire().valueOr(Seconds(std::numeric_limits<double>::infinity()));
data.timeOfNextFullCollection = data.timestamp + vm->heap.fullActivityCallback()->timeUntilFire().valueOr(Seconds(std::numeric_limits<double>::infinity()));
}
}
#endif