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Merge branch 'js/mingw-open-in-gdb'

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Dev support.

* js/mingw-open-in-gdb:
  mingw: add a helper function to attach GDB to the current process
This commit is contained in:
Junio C Hamano 2020-02-17 13:22:18 -08:00
commit e154451a2f
2 changed files with 23 additions and 0 deletions
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13
compat/mingw.c
View File

@ -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;

10
compat/mingw.h
View File

@ -598,6 +598,16 @@ extern CRITICAL_SECTION pinfo_cs;
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
*/