C++ (Cpp) perfmon_stop_child Examples

Example #1

File: opd_perfmon.c Project: 0omega/platform_external_oprofile

static void run_child(size_t cpu)
{
	struct child * self = &children[cpu];

	self->pid = getpid();
	self->sigusr1 = 0;
	self->sigusr2 = 0;
	self->sigterm = 0;

	inner_child = self;
	if (atexit(close_pipe)){
		close_pipe();
		exit(EXIT_FAILURE);
	}

	umask(0);
	/* Change directory to allow directory to be removed */
	if (chdir("/") < 0) {
		perror("Unable to chdir to \"/\"");
		exit(EXIT_FAILURE);
	}

	setup_signals();

	set_affinity(cpu);

	create_context(self);

	write_pmu(self);

	load_context(self);

	notify_parent(self, cpu);

	/* Redirect standard files to /dev/null */
	freopen( "/dev/null", "r", stdin);
	freopen( "/dev/null", "w", stdout);
	freopen( "/dev/null", "w", stderr);

	for (;;) {
		sigset_t sigmask;
		sigfillset(&sigmask);
		sigdelset(&sigmask, SIGUSR1);
		sigdelset(&sigmask, SIGUSR2);
		sigdelset(&sigmask, SIGTERM);

		if (self->sigusr1) {
			perfmon_start_child(self->ctx_fd);
			self->sigusr1 = 0;
		}

		if (self->sigusr2) {
			perfmon_stop_child(self->ctx_fd);
			self->sigusr2 = 0;
		}

		sigsuspend(&sigmask);
	}
}

Example #2

File: opd_perfmon.c Project: flwh/Alcatel_OT_985_kernel

void perfmon_stop(void)
{
	size_t i;

	if (cpu_type == CPU_TIMER_INT)
		return;

	if (!no_xen) {
		perfmon_stop_child(xen_ctx->ctx_fd);
		return;
	}
	
	for (i = 0; i < nr_cpus; ++i)
		kill(children[i].pid, SIGUSR2);
}

Example #3

static void run_child(size_t cpu)
{
	struct child * self = &children[cpu];

	self->pid = getpid();
	self->sigusr1 = 0;
	self->sigusr2 = 0;
	self->sigterm = 0;

	setup_signals();

	set_affinity(cpu);

	create_context(self);

	write_pmu(self);

	load_context(self);

	notify_parent(self, cpu);

	for (;;) {
		sigset_t sigmask;
		sigfillset(&sigmask);
		sigdelset(&sigmask, SIGUSR1);
		sigdelset(&sigmask, SIGUSR2);
		sigdelset(&sigmask, SIGTERM);

		if (self->sigusr1) {
			printf("PFM_START on CPU%d\n", (int)cpu);
			fflush(stdout);
			perfmon_start_child(self->ctx_fd);
			self->sigusr1 = 0;
		}

		if (self->sigusr2) {
			printf("PFM_STOP on CPU%d\n", (int)cpu);
			fflush(stdout);
			perfmon_stop_child(self->ctx_fd);
			self->sigusr2 = 0;
		}

		sigsuspend(&sigmask);
	}
}

Example #4

File: opd_perfmon.c Project: 0omega/platform_external_oprofile

void perfmon_stop(void)
{
	size_t i;

	if (cpu_type == CPU_TIMER_INT)
		return;

	if (!no_xen) {
		perfmon_stop_child(xen_ctx->ctx_fd);
		return;
	}
	
	for (i = 0; i < nr_cpus; ++i)
		if (kill(children[i].pid, SIGUSR2)) {
			perror("Unable to stop perfmon");
			exit(EXIT_FAILURE);
		}
}