Merge branch 'jc/usage-stdin'

diff --git a/run-command.c b/run-command.c
index 3277cf797ed41e5834b3b94fa8d2e9e9d5b4a317..e17e456cdaef63d3fa587b8e216bf1fe5c372317 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -18,26 +18,27 @@ struct child_to_clean {
 static struct child_to_clean *children_to_clean;
 static int installed_child_cleanup_handler;
 
-static void cleanup_children(int sig)
+static void cleanup_children(int sig, int in_signal)
 {
        while (children_to_clean) {
                struct child_to_clean *p = children_to_clean;
                children_to_clean = p->next;
                kill(p->pid, sig);
-               free(p);
+               if (!in_signal)
+                       free(p);
        }
 }
 
 static void cleanup_children_on_signal(int sig)
 {
-       cleanup_children(sig);
+       cleanup_children(sig, 1);
        sigchain_pop(sig);
        raise(sig);
 }
 
 static void cleanup_children_on_exit(void)
 {
-       cleanup_children(SIGTERM);
+       cleanup_children(SIGTERM, 0);
 }
 
 static void mark_child_for_cleanup(pid_t pid)
@@ -220,7 +221,7 @@ static inline void set_cloexec(int fd)
                fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
 }
 
-static int wait_or_whine(pid_t pid, const char *argv0)
+static int wait_or_whine(pid_t pid, const char *argv0, int in_signal)
 {
        int status, code = -1;
        pid_t waiting;
@@ -228,6 +229,8 @@ static int wait_or_whine(pid_t pid, const char *argv0)
 
        while ((waiting = waitpid(pid, &status, 0)) < 0 && errno == EINTR)
                ;       /* nothing */
+       if (in_signal)
+               return 0;
 
        if (waiting < 0) {
                failed_errno = errno;
@@ -437,7 +440,7 @@ int start_command(struct child_process *cmd)
                 * At this point we know that fork() succeeded, but execvp()
                 * failed. Errors have been reported to our stderr.
                 */
-               wait_or_whine(cmd->pid, cmd->argv[0]);
+               wait_or_whine(cmd->pid, cmd->argv[0], 0);
                failed_errno = errno;
                cmd->pid = -1;
        }
@@ -536,12 +539,18 @@ int start_command(struct child_process *cmd)
 
 int finish_command(struct child_process *cmd)
 {
-       int ret = wait_or_whine(cmd->pid, cmd->argv[0]);
+       int ret = wait_or_whine(cmd->pid, cmd->argv[0], 0);
        argv_array_clear(&cmd->args);
        argv_array_clear(&cmd->env_array);
        return ret;
 }
 
+int finish_command_in_signal(struct child_process *cmd)
+{
+       return wait_or_whine(cmd->pid, cmd->argv[0], 1);
+}
+
+
 int run_command(struct child_process *cmd)
 {
        int code;
@@ -595,7 +604,7 @@ static NORETURN void die_async(const char *err, va_list params)
 {
        vreportf("fatal: ", err, params);
 
-       if (!pthread_equal(main_thread, pthread_self())) {
+       if (in_async()) {
                struct async *async = pthread_getspecific(async_key);
                if (async->proc_in >= 0)
                        close(async->proc_in);
@@ -614,6 +623,13 @@ static int async_die_is_recursing(void)
        return ret != NULL;
 }
 
+int in_async(void)
+{
+       if (!main_thread_set)
+               return 0; /* no asyncs started yet */
+       return !pthread_equal(main_thread, pthread_self());
+}
+
 #else
 
 static struct {
@@ -653,6 +669,12 @@ int git_atexit(void (*handler)(void))
 }
 #define atexit git_atexit
 
+static int process_is_async;
+int in_async(void)
+{
+       return process_is_async;
+}
+
 #endif
 
 int start_async(struct async *async)
@@ -712,6 +734,7 @@ int start_async(struct async *async)
                if (need_out)
                        close(fdout[0]);
                git_atexit_clear();
+               process_is_async = 1;
                exit(!!async->proc(proc_in, proc_out, async->data));
        }
 
@@ -772,7 +795,7 @@ int start_async(struct async *async)
 int finish_async(struct async *async)
 {
 #ifdef NO_PTHREADS
-       return wait_or_whine(async->pid, "child process");
+       return wait_or_whine(async->pid, "child process", 0);
 #else
        void *ret = (void *)(intptr_t)(-1);