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windows: kill child processes when the parent dies

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This makes Windows behave just like Unix. This does not affect
processes that are spawned with the UV_PROCESS_DETACHED flag set.
This commit is contained in:
Bert Belder 2013-05-14 16:48:03 -07:00
parent 1fd10deec4
commit 415f4d3e4c
1 changed files with 39 additions and 0 deletions
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39
src/win/process.c
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@ -45,6 +45,36 @@ typedef struct env_var {
#define E_V(str) { str "=", L##str, sizeof(str), 0, 0 }
static HANDLE uv_global_job_handle_;
static uv_once_t uv_global_job_handle_init_guard_ = UV_ONCE_INIT;
static void uv__init_global_job_handle() {
SECURITY_ATTRIBUTES attr;
JOBOBJECT_EXTENDED_LIMIT_INFORMATION info;
memset(&attr, 0, sizeof attr);
attr.bInheritHandle = FALSE;
memset(&info, 0, sizeof info);
info.BasicLimitInformation.LimitFlags =
JOB_OBJECT_LIMIT_BREAKAWAY_OK |
JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK |
JOB_OBJECT_LIMIT_DIE_ON_UNHANDLED_EXCEPTION |
JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
uv_global_job_handle_ = CreateJobObjectW(&attr, NULL);
if (uv_global_job_handle_ == NULL)
uv_fatal_error(GetLastError(), "CreateJobObjectW");
if (!SetInformationJobObject(uv_global_job_handle_,
JobObjectExtendedLimitInformation,
&info,
sizeof info))
uv_fatal_error(GetLastError(), "SetInformationJobObject");
}
static uv_err_t uv_utf8_to_utf16_alloc(const char* s, WCHAR** ws_ptr) {
int ws_len, r;
WCHAR* ws;
@ -908,6 +938,15 @@ int uv_spawn(uv_loop_t* loop, uv_process_t* process,
process->process_handle = info.hProcess;
process->pid = info.dwProcessId;
/* If the process isn't spawned as detached, assign to the global job */
/* object so windows will kill it when the parent process dies. */
if (!(options.flags & UV_PROCESS_DETACHED)) {
uv_once(&uv_global_job_handle_init_guard_, uv__init_global_job_handle);
if (!AssignProcessToJobObject(uv_global_job_handle_, info.hProcess))
uv_fatal_error(GetLastError(), "AssignProcessToJobObject");
}
/* Set IPC pid to all IPC pipes. */
for (i = 0; i < options.stdio_count; i++) {
const uv_stdio_container_t* fdopt = &options.stdio[i];