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#define _GNU_SOURCE
#include "test/util.h"
#include <pthread.h>
#include <sys/mman.h>
#include <err.h>
#include <sched.h>
#include <string.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
void
hexdump(void *data, int len)
{
int i;
for (i = 0; i < len; i++) {
if (i % 16 == 0 && i)
printf("\n");
printf("%02X ", *(uint8_t *)(data + i));
}
printf("\n");
}
bool
pin_process(pid_t pid, int cpu, bool assert)
{
cpu_set_t cpuset;
int ret;
CPU_ZERO(&cpuset);
CPU_SET(cpu, &cpuset);
ret = sched_setaffinity(pid, sizeof(cpu_set_t), &cpuset);
if (ret == -1) {
if (assert) err(1, "sched_setaffinity");
return false;
}
return true;
}
int
read_stat_core(pid_t pid)
{
char path[256];
char line[2048];
FILE *file;
char *p;
int i, cpu;
snprintf(path, sizeof(path), "/proc/%u/stat", pid);
file = fopen(path, "r");
if (!file) return -1;
if (!fgets(line, sizeof(line), file))
err(1, "read stat");
p = line;
for (i = 0; i < 38 && (p = strchr(p, ' ')); i++)
p += 1;
if (!p) errx(1, "stat format");
cpu = atoi(p);
fclose(file);
return cpu;
}
void
print_counts(uint8_t *counts)
{
int i;
for (i = 0; i < 64; i++) {
if (i % 16 == 0 && i)
printf("\n");
if (counts[i] == 1)
printf("\x1b[38;5;88m");
else if (counts[i] > 1)
printf("\x1b[38;5;196m");
printf("%2i ", i);
if (counts[i] > 0)
printf("\x1b[0m");
}
printf("\n");
}
void
print_counts_raw(uint8_t *counts)
{
int i;
for (i = 0; i < 64; i++) {
if (i % 16 == 0 && i)
printf("\n");
if (counts[i] == 1)
printf("\x1b[38;5;88m");
else if (counts[i] > 1)
printf("\x1b[38;5;196m");
printf("%02X ", (uint8_t) counts[i]);
if (counts[i] > 0)
printf("\x1b[0m");
}
printf("\n");
}
struct ipc *
ipc_alloc(void)
{
pthread_mutexattr_t mutex_attr;
pthread_condattr_t cond_attr;
struct ipc *ipc;
pthread_condattr_init(&cond_attr);
pthread_condattr_setpshared(&cond_attr, PTHREAD_PROCESS_SHARED);
pthread_mutexattr_init(&mutex_attr);
pthread_mutexattr_setpshared(&mutex_attr, PTHREAD_PROCESS_SHARED);
ipc = mmap(NULL, sizeof(struct ipc), PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_ANONYMOUS, -1, 0);
if (ipc == MAP_FAILED) err(1, "mmap");
pthread_mutex_init(&ipc->lock, &mutex_attr);
pthread_cond_init(&ipc->sig_parent, &cond_attr);
ipc->has_sig_parent = false;
pthread_cond_init(&ipc->sig_child, &cond_attr);
ipc->has_sig_child = false;
ipc->init = true;
return ipc;
}
void
ipc_free(struct ipc *ipc)
{
if (ipc->init) {
pthread_mutex_destroy(&ipc->lock);
pthread_cond_destroy(&ipc->sig_parent);
pthread_cond_destroy(&ipc->sig_child);
ipc->init = false;
}
munmap(ipc, sizeof(ipc));
}
void
ipc_signal_parent(struct ipc *ipc)
{
if (!ipc->init) errx(1, "ipc deinit");
pthread_mutex_lock(&ipc->lock);
if (!ipc->has_sig_child)
pthread_cond_signal(&ipc->sig_child);
ipc->has_sig_child = true;
pthread_mutex_unlock(&ipc->lock);
}
void
ipc_wait_child(struct ipc *ipc)
{
if (!ipc->init) errx(1, "ipc deinit");
pthread_mutex_lock(&ipc->lock);
while (!ipc->has_sig_child)
pthread_cond_wait(&ipc->sig_child, &ipc->lock);
ipc->has_sig_child = false;
pthread_mutex_unlock(&ipc->lock);
}
void
ipc_signal_child(struct ipc *ipc)
{
if (!ipc->init) errx(1, "ipc deinit");
pthread_mutex_lock(&ipc->lock);
if (!ipc->has_sig_parent)
pthread_cond_signal(&ipc->sig_parent);
ipc->has_sig_parent = true;
pthread_mutex_unlock(&ipc->lock);
}
void
ipc_wait_parent(struct ipc *ipc)
{
if (!ipc->init) errx(1, "ipc deinit");
pthread_mutex_lock(&ipc->lock);
while (!ipc->has_sig_parent)
pthread_cond_wait(&ipc->sig_parent, &ipc->lock);
ipc->has_sig_parent = false;
pthread_mutex_unlock(&ipc->lock);
}
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