Profiler::~Profiler() {
SET_AFFINITY(0, sizeof(cpu_set_t), &m_prev_mask);
endAllFrames();
for (Frame *p = m_frame_free_list; p;) {
Frame *cur = p;
p = p->m_parent;
free(cur);
}
}
Profiler::~Profiler() {
if (m_has_affinity) {
SET_AFFINITY(0, sizeof(cpu_set_t), &m_prev_mask);
}
endAllFrames();
for (Frame *p = m_frame_free_list; p;) {
Frame *cur = p;
p = p->m_parent;
delete cur;
}
}
MachineInfo() {
m_cpu_num = sysconf(_SC_NPROCESSORS_CONF);
m_cpu_frequencies = get_cpu_frequency_from_file("/proc/cpuinfo", m_cpu_num);
if (m_cpu_frequencies)
return;
m_cpu_frequencies = new int64_t[m_cpu_num];
for (int i = 0; i < m_cpu_num; i++) {
cpu_set_t prev_mask;
GET_AFFINITY(0, sizeof(cpu_set_t), &prev_mask);
BindToCPU(i);
// Make sure the current process gets scheduled to the target cpu. This
// might not be necessary though.
usleep(0);
m_cpu_frequencies[i] = get_cpu_frequency();
SET_AFFINITY(0, sizeof(cpu_set_t), &prev_mask);
}
}
{ \
KIND_UNBLOCK, \
index, \
{ 0 }, \
{ cpu0, cpu1 } \
}
static const test_action test_actions[] = {
RESET,
UNBLOCK( 0, 0, IDLE),
UNBLOCK( 1, 0, 1),
UNBLOCK( 3, 0, 1),
SET_PRIORITY( 1, P(2), 0, 1),
SET_PRIORITY( 3, P(1), 0, 3),
BLOCK( 3, 0, 1),
SET_AFFINITY( 1, A(1, 1), 0, 1),
SET_AFFINITY( 1, A(1, 0), 1, 0),
SET_AFFINITY( 1, A(1, 1), 1, 0),
SET_AFFINITY( 1, A(1, 0), 1, 0),
SET_AFFINITY( 1, A(0, 1), 0, 1),
BLOCK( 0, IDLE, 1),
UNBLOCK( 0, 0, 1),
BLOCK( 1, 0, IDLE),
UNBLOCK( 1, 0, 1),
RESET,
/*
* Show that FIFO order is honoured across all threads of the same priority.
*/
SET_PRIORITY( 1, P(0), IDLE, IDLE),
SET_PRIORITY( 2, P(1), IDLE, IDLE),
SET_PRIORITY( 3, P(1), IDLE, IDLE),
/**
* Bind the current process to a specified CPU. This function is to ensure
* that the OS won't schedule the process to different processors, which
* would make values read by rdtsc unreliable.
*
* @param uint32 cpu_id, the id of the logical cpu to be bound to.
*
* @author cjiang
*/
static void BindToCPU(uint32_t cpu_id) {
cpu_set_t new_mask;
CPU_ZERO(&new_mask);
CPU_SET(cpu_id, &new_mask);
SET_AFFINITY(0, sizeof(cpu_set_t), &new_mask);
}