re PR libgcj/29324 (add wait handling hook)

	PR libgcj/29324
	* include/posix-threads.h (_Jv_BlockSigchld): Declare.
	(_Jv_UnBlockSigchld): Same.
	* posix-threads.cc: Include posix-threads.h.
	(block_sigchld) Rename to...
	(_Jv_BlockSigchld) ... this.
	(_Jv_UnBlockSigchld): New function.
	(_Jv_InitThreads): Call _Jv_BlockSigchld in place of block_sigchld.
	(_Jv_ThreadStart): Same.
	* java/lang/PosixProcess$ProcessManager.h: Regenerate.
	* java/lang/PosixProcess.java: Clean up imports.
	(ProcessManager): Make final.
	(ProcessManager.queue): Genericise and make private.
	(ProcessManager.pidToProcess): Remove.
	(ProcessManager.liveProcesses): New field.
	(ProcessManager.reaperPID): Remove.
	(ProcessManager.nativeData): New field.
	(ProcessManager.removeProcessFromMap): Remove.
	(ProcessManager.addProcessToMap):Remove.
	(ProcessManager.addToLiveProcesses): New method.
	(ProcessManager.run): Rewritten.
	(ProcessManager.reap): Change method signature,
	(getErrorStream): Correct formatting.
	(getInputStream): Same.
	(spawn): Add process to liveProcesses list.
	(pid): Make package private.
	* java/lang/PosixProcess.h: Regenerate.
	* java/lang/natPosixProcess.cc: Include posix.h and posix-threads.h.
	Add useing namespace java::lang.
	(ProcessManagerInternal): New struct.
	(sigchld_handler): Rewritten.
	(init): Rewritten.
	(waitForSignal): Same.
	(reap): Same.
	(signalReaper): Same.
	(nativeDestroy): Call kill as ::kill.
	(nativeSpawn): Correct formatting.
	* classpath/lib/java/lang/PosixProcess$EOFInputStream.class: Regenerate.
	* classpath/lib/java/lang/PosixProcess.class: Same.
	* classpath/lib/java/lang/PosixProcess$ProcessManager.class: Same.

From-SVN: r124638

1 files changed, 17 insertions, 5 deletions

diff --git a/libjava/posix-threads.cc b/libjava/posix-threads.cc
index 6ea724b3be8..287d6b79a6f 100644
--- a/libjava/posix-threads.cc
+++ b/libjava/posix-threads.cc
@@ -14,6 +14,7 @@ details.  */
 #include <config.h>
 
 #include "posix.h"
+#include "posix-threads.h"
 
 // If we're using the Boehm GC, then we need to override some of the
 // thread primitives.  This is fairly gross.
@@ -472,8 +473,8 @@ handle_intr (int)
   // Do nothing.
 }
 
-static void
-block_sigchld()
+void
+_Jv_BlockSigchld()
 {
   sigset_t mask;
   sigemptyset (&mask);
@@ -484,6 +485,17 @@ block_sigchld()
 }
 
 void
+_Jv_UnBlockSigchld()
+{
+  sigset_t mask;
+  sigemptyset (&mask);
+  sigaddset (&mask, SIGCHLD);
+  int c = pthread_sigmask (SIG_UNBLOCK, &mask, NULL);
+  if (c != 0)
+    JvFail (strerror (c));
+}
+
+void
 _Jv_InitThreads (void)
 {
   pthread_key_create (&_Jv_ThreadKey, NULL);
@@ -501,7 +513,7 @@ _Jv_InitThreads (void)
 
   // Block SIGCHLD here to ensure that any non-Java threads inherit the new 
   // signal mask.
-  block_sigchld();
+  _Jv_BlockSigchld();
 
   // Check/set the thread stack size.
   size_t min_ss = 32 * 1024;
@@ -581,7 +593,7 @@ _Jv_ThreadRegister (_Jv_Thread_t *data)
       }
 # endif
   // Block SIGCHLD which is used in natPosixProcess.cc.
-  block_sigchld();
+  _Jv_BlockSigchld();
 }
 
 void
@@ -629,7 +641,7 @@ _Jv_ThreadStart (java::lang::Thread *thread, _Jv_Thread_t *data,
 
   // Block SIGCHLD which is used in natPosixProcess.cc.
   // The current mask is inherited by the child thread.
-  block_sigchld();
+  _Jv_BlockSigchld();
 
   param.sched_priority = thread->getPriority();