scrcpy/app/src/util/process.c

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#include "process.h"
#include <assert.h>
#include <libgen.h>
#include "log.h"
enum sc_process_result
sc_process_execute(const char *const argv[], sc_pid *pid, unsigned flags) {
return sc_process_execute_p(argv, pid, flags, NULL, NULL, NULL);
}
ssize_t
sc_pipe_read_all(sc_pipe pipe, char *data, size_t len) {
size_t copied = 0;
while (len > 0) {
ssize_t r = sc_pipe_read(pipe, data, len);
if (r <= 0) {
return copied ? (ssize_t) copied : r;
}
len -= r;
data += r;
copied += r;
}
return copied;
}
static int
run_observer(void *data) {
struct sc_process_observer *observer = data;
sc_process_wait(observer->pid, false); // ignore exit code
sc_mutex_lock(&observer->mutex);
observer->terminated = true;
sc_cond_signal(&observer->cond_terminated);
sc_mutex_unlock(&observer->mutex);
if (observer->listener) {
observer->listener->on_terminated(observer->listener_userdata);
}
return 0;
}
bool
sc_process_observer_init(struct sc_process_observer *observer, sc_pid pid,
const struct sc_process_listener *listener,
void *listener_userdata) {
// Either no listener, or on_terminated() is defined
assert(!listener || listener->on_terminated);
bool ok = sc_mutex_init(&observer->mutex);
if (!ok) {
return false;
}
ok = sc_cond_init(&observer->cond_terminated);
if (!ok) {
sc_mutex_destroy(&observer->mutex);
return false;
}
observer->pid = pid;
observer->listener = listener;
observer->listener_userdata = listener_userdata;
observer->terminated = false;
ok = sc_thread_create(&observer->thread, run_observer, "process_observer",
observer);
if (!ok) {
sc_cond_destroy(&observer->cond_terminated);
sc_mutex_destroy(&observer->mutex);
return false;
}
return true;
}
bool
sc_process_observer_timedwait(struct sc_process_observer *observer,
sc_tick deadline) {
sc_mutex_lock(&observer->mutex);
bool timed_out = false;
while (!observer->terminated && !timed_out) {
timed_out = !sc_cond_timedwait(&observer->cond_terminated,
&observer->mutex, deadline);
}
bool terminated = observer->terminated;
sc_mutex_unlock(&observer->mutex);
return terminated;
}
void
sc_process_observer_join(struct sc_process_observer *observer) {
sc_thread_join(&observer->thread, NULL);
}
void
sc_process_observer_destroy(struct sc_process_observer *observer) {
sc_cond_destroy(&observer->cond_terminated);
sc_mutex_destroy(&observer->mutex);
}