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authorJunio C Hamano <gitster@pobox.com>2020-02-17 21:22:18 (GMT)
committerJunio C Hamano <gitster@pobox.com>2020-02-17 21:22:18 (GMT)
commite154451a2feb7aa8c265aa7b9b0a67c7676e12c6 (patch)
tree8ba999615b8479cb9c4c68f506bd33203bfefba4
parentfc25a19265deb84170aab1216228d4e817a17d15 (diff)
parent08809c09aa1351b603e9c55734105cd2e3c24c41 (diff)
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Merge branch 'js/mingw-open-in-gdb'
Dev support. * js/mingw-open-in-gdb: mingw: add a helper function to attach GDB to the current process
-rw-r--r--compat/mingw.c13
-rw-r--r--compat/mingw.h10
2 files changed, 23 insertions, 0 deletions
diff --git a/compat/mingw.c b/compat/mingw.c
index 402c1ad..b523014 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -13,6 +13,19 @@
static const int delay[] = { 0, 1, 10, 20, 40 };
+void open_in_gdb(void)
+{
+ static struct child_process cp = CHILD_PROCESS_INIT;
+ extern char *_pgmptr;
+
+ argv_array_pushl(&cp.args, "mintty", "gdb", NULL);
+ argv_array_pushf(&cp.args, "--pid=%d", getpid());
+ cp.clean_on_exit = 1;
+ if (start_command(&cp) < 0)
+ die_errno("Could not start gdb");
+ sleep(1);
+}
+
int err_win_to_posix(DWORD winerr)
{
int error = ENOSYS;
diff --git a/compat/mingw.h b/compat/mingw.h
index 714bc1d..e6fe810 100644
--- a/compat/mingw.h
+++ b/compat/mingw.h
@@ -599,6 +599,16 @@ int wmain(int argc, const wchar_t **w_argv);
int main(int argc, const char **argv);
/*
+ * For debugging: if a problem occurs, say, in a Git process that is spawned
+ * from another Git process which in turn is spawned from yet another Git
+ * process, it can be quite daunting to figure out what is going on.
+ *
+ * Call this function to open a new MinTTY (this assumes you are in Git for
+ * Windows' SDK) with a GDB that attaches to the current process right away.
+ */
+extern void open_in_gdb(void);
+
+/*
* Used by Pthread API implementation for Windows
*/
int err_win_to_posix(DWORD winerr);