patch 8.0.0051

Problem:    New code for job_stop() breaks channel test on AppVeyor.
Solution:   Revert the change.

Author: brammool

src/os_win32.c

@@ -50,10 +50,6 @@
 # endif
 #endif
 
-#ifdef FEAT_JOB_CHANNEL
-# include <tlhelp32.h>
-#endif
-
 #ifdef __MINGW32__
 # ifndef FROM_LEFT_1ST_BUTTON_PRESSED
 #  define FROM_LEFT_1ST_BUTTON_PRESSED    0x0001
@@ -4800,6 +4796,7 @@ mch_start_job(char *cmd, job_T *job, jobopt_T *options)
 {
     STARTUPINFO		si;
     PROCESS_INFORMATION	pi;
+    HANDLE		jo;
     SECURITY_ATTRIBUTES saAttr;
     channel_T		*channel = NULL;
     HANDLE		ifd[2];
@@ -4824,6 +4821,13 @@ mch_start_job(char *cmd, job_T *job, jobopt_T *options)
     efd[0] = INVALID_HANDLE_VALUE;
     efd[1] = INVALID_HANDLE_VALUE;
 
+    jo = CreateJobObject(NULL, NULL);
+    if (jo == NULL)
+    {
+	job->jv_status = JOB_FAILED;
+	goto failed;
+    }
+
     ZeroMemory(&pi, sizeof(pi));
     ZeroMemory(&si, sizeof(si));
     si.cb = sizeof(si);
@@ -4908,17 +4912,28 @@ mch_start_job(char *cmd, job_T *job, jobopt_T *options)
     }
 
     if (!vim_create_process(cmd, TRUE,
+	    CREATE_SUSPENDED |
 	    CREATE_DEFAULT_ERROR_MODE |
 	    CREATE_NEW_PROCESS_GROUP |
 	    CREATE_NEW_CONSOLE,
 	    &si, &pi))
     {
+	CloseHandle(jo);
 	job->jv_status = JOB_FAILED;
 	goto failed;
     }
 
+    if (!AssignProcessToJobObject(jo, pi.hProcess))
+    {
+	/* if failing, switch the way to terminate
+	 * process with TerminateProcess. */
+	CloseHandle(jo);
+	jo = NULL;
+    }
+    ResumeThread(pi.hThread);
     CloseHandle(pi.hThread);
     job->jv_proc_info = pi;
+    job->jv_job_object = jo;
     job->jv_status = JOB_STARTED;
 
     CloseHandle(ifd[0]);
@@ -5005,52 +5020,17 @@ mch_detect_ended_job(job_T *job_list)
     return NULL;
 }
 
-    static BOOL
-terminate_all(HANDLE process, int code)
-{
-    PROCESSENTRY32  pe;
-    HANDLE	    h = INVALID_HANDLE_VALUE;
-    DWORD	    pid = GetProcessId(process);
-
-    if (pid != 0)
-    {
-	h = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
-	if (h == INVALID_HANDLE_VALUE)
-	    goto theend;
-
-	pe.dwSize = sizeof(PROCESSENTRY32);
-	if (Process32First(h, &pe))
-	{
-	    do
-	    {
-		if (pe.th32ParentProcessID == pid)
-		{
-		    HANDLE ph = OpenProcess(
-				  PROCESS_ALL_ACCESS, FALSE, pe.th32ProcessID);
-		    if (ph != NULL)
-		    {
-			terminate_all(ph, code);
-			CloseHandle(ph);
-		    }
-		}
-	    } while (Process32Next(h, &pe));
-	}
-
-	CloseHandle(h);
-    }
-
-theend:
-    return TerminateProcess(process, code);
-}
-
     int
 mch_stop_job(job_T *job, char_u *how)
 {
     int ret;
 
     if (STRCMP(how, "term") == 0 || STRCMP(how, "kill") == 0 || *how == NUL)
     {
-	return terminate_all(job->jv_proc_info.hProcess, 0) ? OK : FAIL;
+	if (job->jv_job_object != NULL)
+	    return TerminateJobObject(job->jv_job_object, 0) ? OK : FAIL;
+	else
+	    return TerminateProcess(job->jv_proc_info.hProcess, 0) ? OK : FAIL;
     }
 
     if (!AttachConsole(job->jv_proc_info.dwProcessId))
@@ -5071,6 +5051,8 @@ mch_clear_job(job_T *job)
 {
     if (job->jv_status != JOB_FAILED)
     {
+	if (job->jv_job_object != NULL)
+	    CloseHandle(job->jv_job_object);
 	CloseHandle(job->jv_proc_info.hProcess);
     }
 }

src/structs.h

@@ -1437,6 +1437,7 @@ struct jobvar_S
 #endif
 #ifdef WIN32
     PROCESS_INFORMATION	jv_proc_info;
+    HANDLE		jv_job_object;
 #endif
     jobstatus_T	jv_status;
     char_u	*jv_stoponexit; /* allocated */

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    51,
 /**/
     50,
 /**/