Thread suspension: Implement for Linux

src/trusted/service_runtime/nacl_signal.h

 /*
  * Copyright (c) 2012 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef NATIVE_CLIENT_SERVICE_RUNTIME_NACL_SIGNAL_H__
 #define NATIVE_CLIENT_SERVICE_RUNTIME_NACL_SIGNAL_H__ 1
 
 /*
@@ skipping 40 matching lines @@
   SIGTRACE= 5,
   SIGABRT = 6,
   SIGBUS  = 7,
   SIGFPE  = 8,
   SIGKILL = 9,
   SIGSEGV = 11,
   SIGSTKFLT = 16,
 };
 #endif
 
+#if NACL_LINUX
+# define NACL_THREAD_SUSPEND_SIGNAL SIGUSR1
+#endif
+
 
 /*
  * Prototype for a signal handler.  The handler will receive the POSIX
  * signal number and an opaque platform dependent signal object.
  */
 typedef enum NaClSignalResult (*NaClSignalHandler)(int sig_num, void *ctx);
 
 
 /*
  * Allocates a stack suitable for passing to
@@ skipping 111 matching lines @@
 /*
  * Platform specific code. Do not call directly.
  */
 void NaClSignalHandlerInitPlatform(void);
 void NaClSignalHandlerFiniPlatform(void);
 
 
 EXTERN_C_END
 
 #endif  /* NATIVE_CLIENT_SERVICE_RUNTIME_NACL_SIGNAL_H__ */