* child_info.h (child_info_fork::handle_failure): Declare new function.

(child_info_fork::retry): New field.
* dcrt0.cc (__api_fatal_exit_val): Define.
(child_info_fork::handle_failure): Define new function.
(__api_fatal): Exit using __api_fatal_exit_val value.
* environ.cc (set_fork_retry): Set fork_retry based on CYGWIN environment
variable.
(parse_thing): Add "fork_retry" setting.
* fork.cc (fork_retry): Define.
(frok::parent): Reorganize to allow retry of failed child creation if child
signalled that it was ok to do so.
* heap.cc (heap_init): Signal parent via handle_failure when VirtualAlloc
fails.
* pinfo.h (EXITCODE_RETRY): Declare.
* sigproc.cc (child_info::sync): Properly exit with failure condition if called
for fork and didn't see subproc_ready.
* spawn.cc (spawn_guts): Use windows pid as first argument.
* winsup.h: Remove obsolete NEW_MACRO_VARARGS define.
(__api_fatal_exit_val): Declare.
(set_api_fatal_return): Define.
(in_dllentry): Declare.
* exceptions.cc (inside_kernel): Remove unneeded in_dllentry declaration.

1 files changed, 10 insertions, 1 deletions

diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc
index 149d37794..892a46581 100644
--- a/winsup/cygwin/dcrt0.cc
+++ b/winsup/cygwin/dcrt0.cc
@@ -122,6 +122,7 @@ extern "C"
 #ifdef DEBUGGING
   int pinger;
 #endif
+  int NO_COPY __api_fatal_exit_val = 1;
 };
 
 char *old_title;
@@ -640,6 +641,14 @@ get_cygwin_startup_info ()
   return res;
 }
 
+bool
+child_info_fork::handle_failure (DWORD err)
+{
+  if (retry > 0)
+    ExitProcess (EXITCODE_RETRY);
+  return 0;
+}
+
 #define dll_data_start &_data_start__
 #define dll_data_end &_data_end__
 #define dll_bss_start &_bss_start__
@@ -1157,7 +1166,7 @@ __api_fatal (const char *fmt, ...)
 #ifdef DEBUGGING
   try_to_debug ();
 #endif
-  myself.exit (1);
+  myself.exit (__api_fatal_exit_val);
 }
 
 void