bool
MultiLocker::ReadUnlock()
{
#if TIMING
bigtime_t start = system_time();
#endif
bool unlocked = false;
if (IsWriteLocked()) {
//writers simply decrement the nesting count
fWriterNest--;
unlocked = true;
} else {
//decrement and retrieve the read counter
int32 current_count = atomic_add(&fReadCount, -1);
if (current_count < 0) {
//a writer is waiting for the lock so release fWriteSem
unlocked = (release_sem_etc(fWriteSem, 1,
B_DO_NOT_RESCHEDULE) == B_OK);
} else unlocked = true;
//unregister if we released the lock and are debugging
if (fDebugArray && unlocked) unregister_thread();
}
#if TIMING
bigtime_t end = system_time();
ru_time += (end - start);
ru_count++;
#endif
return unlocked;
}
void
mono_thread_info_dettach (void)
{
MonoThreadInfo *info = mono_native_tls_get_value (thread_info_key);
if (info) {
THREADS_DEBUG ("detaching %p\n", info);
unregister_thread (info);
}
}
static void
thread_info_key_dtor (void *arg)
{
/* Put the MonoThreadInfo back for the duration of the
* unregister code. In some circumstances the thread needs to
* take the GC lock which may block which requires a coop
* state transition. */
mono_native_tls_set_value (thread_info_key, arg);
unregister_thread (arg);
mono_native_tls_set_value (thread_info_key, NULL);
}
void file_thread_handler(gpointer *NotUsed){
register_thread("Disk I/O Thread");
while(1){
gpointer *data = g_async_queue_pop (file_async_queue);
if (data){
if (data == THREAD_EXIT){
unregister_thread();
g_thread_exit (NULL);
}
queue_function_data *function_data = (queue_function_data*) data;
function_data->func(function_data->data);
g_free(function_data);
}
}
}
void gui_thread_handler(gpointer* NotUsed){
register_thread("GUI Thread");
while(1){
gpointer *data = g_async_queue_pop (gui_async_queue);
if (data){
if (data == THREAD_EXIT) {
//TODO Save ListStore
save_liststore_to_file(NULL);
unregister_thread();
g_thread_exit (NULL);
}
queue_function_data *function_data = (queue_function_data*) data;
function_data->func(function_data->data);
g_free(function_data);
}
}
}
void
mono_thread_info_dettach (void)
{
MonoThreadInfo *info;
if (!mono_threads_inited)
{
/* This can happen from DllMain(THREAD_DETACH) on Windows, if a thread
* is created before an embedding API user initialized Mono. */
THREADS_DEBUG ("mono_thread_info_dettach called before mono_threads_init\n");
return;
}
info = mono_native_tls_get_value (thread_info_key);
if (info) {
THREADS_DEBUG ("detaching %p\n", info);
unregister_thread (info);
}
}
static void *live_inspector(void *arg) {
li_data *data = (li_data *)arg;
register_thread("Live Inspector");
unsigned long endtime = (unsigned long)time(NULL) + data->time_to_live;
while(!stop) {
unsigned long curtime = (unsigned long)time(NULL);
int status = api_jobs_status(data->build_id);
if(status || curtime > endtime) {
kill(data->pid, SIGKILL);
canceled = 1;
break;
}
for (int i = 0; !stop && i < 3; i++) {
sleep(1);
}
}
free(data);
unregister_thread(li_thread);
return NULL;
}
int main(int argc, char *argv[]) {
char proc_path[50], kernel_name[MAX_KERNEL_NAME_LENGTH];
int kmux_command, proc_desc, ret_val;
long thread_id;
thread_register *thread_info = (thread_register*)malloc(sizeof(thread_register));
ret_val = sprintf(proc_path, "/proc/%s", KMUX_PROC_NAME);
// Sanitize input
if (argc != 4) {
printf("Usage: threadregistrar command kernel_name, thread_id");
exit(-1);
}
if (strlen(argv[1]) > 1) {
printf("Invalid kmux command: %s", argv[2]);
exit(-1);
} else {
kmux_command = atoi(argv[1]);
if (!kmux_command || (kmux_command != KMUX_IOCTL_CMD_REGISTER_THREAD && kmux_command != KMUX_IOCTL_CMD_UNREGISTER_THREAD)) {
printf("Invalid kmux command: %s", argv[1]);
exit(-1);
}
}
if (strlen(argv[2]) > 50) {
printf("Kernel name too long: %s", argv[1]);
exit(-1);
} else {
strcpy(kernel_name, argv[2]);
}
thread_id = atol(argv[3]);
if (!thread_id) {
printf("Invalid thread ID: %s", argv[3]);
exit(-1);
}
printf("kmux command: %d\n", kmux_command);
printf("Kernel name: %s\n", kernel_name);
printf("Thread ID: %u\n", (unsigned int)thread_id);
strcpy(thread_info->kernel_name, kernel_name);
thread_info->thread_id = (unsigned int)thread_id;
proc_desc = open(proc_path, O_RDONLY);
if (proc_desc < 0) {
printf("Can't open proc: %s\n", KMUX_PROC_NAME);
exit(-1);
}
if (kmux_command == KMUX_IOCTL_CMD_REGISTER_THREAD) {
register_thread(proc_desc, thread_info);
} else {
unregister_thread(proc_desc, thread_info);
}
close(proc_desc);
return 0;
}
