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authorChristopher Faylor <me@cgf.cx>2013-01-21 17:17:44 +0000
committerChristopher Faylor <me@cgf.cx>2013-01-21 17:17:44 +0000
commit93ff4bbee0f74342000a6c90ae175170a640a0b8 (patch)
treeb0315a5cf35a4b841afd9a943fe612171ed23368
parent3b1a8c572f8cea988ac1ede84000401f6d8c402e (diff)
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* dcrt0.cc (dll_crt0_1): Comment assumption.
* exceptions.cc (sigpacket::setup_handler): Avoid sending signals during fork processing.
-rw-r--r--winsup/cygwin/ChangeLog6
-rw-r--r--winsup/cygwin/dcrt0.cc2
-rw-r--r--winsup/cygwin/exceptions.cc4
3 files changed, 12 insertions, 0 deletions
diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 5796902..51e2467 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,5 +1,11 @@
2013-01-21 Christopher Faylor <me.cygwin2013@cgf.cx>
+ * dcrt0.cc (dll_crt0_1): Comment assumption.
+ * exceptions.cc (sigpacket::setup_handler): Avoid sending signals
+ during fork processing.
+
+2013-01-21 Christopher Faylor <me.cygwin2013@cgf.cx>
+
* dcrt0.cc (dll_crt0_1): Flag that we are working "incyg". Handle any
signals (presumably exiting signals) which may have come in while we
are in the process of setting up.
diff --git a/winsup/cygwin/dcrt0.cc b/winsup/cygwin/dcrt0.cc
index 931ebd9..094c0a0 100644
--- a/winsup/cygwin/dcrt0.cc
+++ b/winsup/cygwin/dcrt0.cc
@@ -891,6 +891,8 @@ dll_crt0_1 (void *)
_tlstop = (char *) fork_info->stacktop;
}
+ /* Not resetting _my_tls.incyg here because presumably fork will overwrite
+ it with the value of the forker and all will be good. */
longjmp (fork_info->jmp, true);
}
diff --git a/winsup/cygwin/exceptions.cc b/winsup/cygwin/exceptions.cc
index 0a02f0d..5a8474b 100644
--- a/winsup/cygwin/exceptions.cc
+++ b/winsup/cygwin/exceptions.cc
@@ -789,6 +789,10 @@ sigpacket::setup_handler (void *handler, struct sigaction& siga, _cygtls *tls)
goto out;
}
+ while (in_forkee)
+ yield (); /* Won't be able to send signals until we're finished
+ processing fork(). */
+
for (int n = 0; n < CALL_HANDLER_RETRY_OUTER; n++)
{
for (int i = 0; i < CALL_HANDLER_RETRY_INNER; i++)