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My Os is fedora20, v8 version is v8-3.25.30,
first loop consumes 0.02 second, and then the 172th's loop consumes
2.48second.
#include <pthread.h>
#include <v8.h>
#include <sys/time.h>
double GetTime()
{
timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec + (double)tv.tv_usec * 0.000001;
}
v8::Isolate *isolate;
class Thread
{
public:
static void* Start(void *thread)
{
static_cast<Thread*>(thread)->Start_();
}
private:
void Start_()
{
v8::Locker locker(isolate);
v8::Isolate::Scope scope(isolate);
}
};
void test(pthread_t tid[], Thread thread[])
{
for (int i = 0; i < 1024; ++i)
{
pthread_create(&tid[i], NULL, Thread::Start, &thread[i]);
}
for (int i = 0; i < 1024; ++i)
{
pthread_join(tid[i], NULL);
}
}
int main(int argc, char* argv[])
{
v8::V8::Initialize();
isolate = v8::Isolate::New();
{
pthread_t tid[1024];
Thread thread[1024];
for (int i = 0; i < 1000 * 1000 * 1000; ++i)
{
double s = GetTime();
test(tid, thread);
printf("%d. %f\n", i+1, GetTime() - s);
}
}
isolate->Dispose();
v8::V8::Dispose();
}
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