* 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, 9 insertions, 1 deletions

diff --git a/winsup/cygwin/environ.cc b/winsup/cygwin/environ.cc
index eb99d2b51..23d0993a7 100644
--- a/winsup/cygwin/environ.cc
+++ b/winsup/cygwin/environ.cc
@@ -39,6 +39,7 @@ static bool envcache = true;
 #ifdef USE_SERVER
 extern bool allow_server;
 #endif
+extern int fork_retry;
 
 static char **lastenviron;
 
@@ -515,7 +516,13 @@ subauth_id_init (const char *buf)
 static void
 set_chunksize (const char *buf)
 {
-  wincap.set_chunksize (strtol (buf, NULL, 0));
+  wincap.set_chunksize (strtoul (buf, NULL, 0));
+}
+
+static void
+set_fork_retry (const char *buf)
+{
+  fork_retry = strtoul (buf, NULL, 0);
 }
 
 static void
@@ -587,6 +594,7 @@ static struct parse_thing
   {"tty", {NULL}, set_process_state, NULL, {{0}, {PID_USETTY}}},
   {"winsymlinks", {&allow_winsymlinks}, justset, NULL, {{false}, {true}}},
   {"transparent_exe", {&transparent_exe}, justset, NULL, {{false}, {true}}},
+  {"fork_retry", {func: set_fork_retry}, isfunc, NULL, {{0}, {5}}},
   {NULL, {0}, justset, 0, {{0}, {0}}}
 };