[PATCH/RFC 06/11] run-command: add kill_async() and is_async_alive()

From

Erik Faye-Lund <kusmabite@googlemail.com>

Date

Nov 26, 2009, 00:44 UTC

Message-ID

<1259196260-3064-7-git-send-email-kusmabite@gmail.com>

In-Reply-To

<1259196260-3064-6-git-send-email-kusmabite@gmail.com>

These functions will aid the Windows port of git-daemon.

Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
---
 run-command.c |   27 +++++++++++++++++++++++++++
 run-command.h |    2 ++
 2 files changed, 29 insertions(+), 0 deletions(-)

diff --git a/run-command.c b/run-command.c
index cf2d8f7..e5a0e06 100644
--- a/run-command.c
+++ b/run-command.c
@@ -373,6 +373,33 @@ int finish_async(struct async *async)
 	return ret;
 }
 
+int kill_async(struct async *async)
+{
+#ifndef WIN32
+	return kill(async->pid, SIGTERM);
+#else
+	DWORD ret = 0;
+	if (!TerminateThread(async->tid, 0))
+		ret = error("killing thread failed: %lu", GetLastError());
+	else if (!GetExitCodeThread(async->tid, &ret))
+		ret = error("cannot get thread exit code: %lu", GetLastError());
+	return ret;
+#endif
+}
+
+int is_async_alive(struct async *async)
+{
+#ifndef WIN32
+	int dummy;
+	return waitpid(async->pid, &dummy, WNOHANG);
+#else
+	int ret = WaitForSingleObject(async->tid, 0);
+	if (ret == WAIT_FAILED)
+		return error("checking thread state failed: %lu", GetLastError());
+	return ret != WAIT_OBJECT_0;
+#endif
+}
+
 int run_hook(const char *index_file, const char *name, ...)
 {
 	struct child_process hook;
diff --git a/run-command.h b/run-command.h
index fb34209..955b0bd 100644
--- a/run-command.h
+++ b/run-command.h
@@ -80,5 +80,7 @@ struct async {
 
 int start_async(struct async *async);
 int finish_async(struct async *async);
+int kill_async(struct async *async);
+int is_async_alive(struct async *async);
 
 #endif

-- 
1.6.5.rc2.7.g4f8d3