[NaCl SDK] nacl_io: Add initial implementations of kill and signal

native_client_sdk/src/libraries/nacl_io/kernel_proxy.h

Index: native_client_sdk/src/libraries/nacl_io/kernel_proxy.h
diff --git a/native_client_sdk/src/libraries/nacl_io/kernel_proxy.h b/native_client_sdk/src/libraries/nacl_io/kernel_proxy.h
index 21d68c1de5216e3594603c61e8eb12a4f02fa2cd..4cff84e9ef3fa73996da75aef8288aa2d69e4bd6 100644
--- a/native_client_sdk/src/libraries/nacl_io/kernel_proxy.h
+++ b/native_client_sdk/src/libraries/nacl_io/kernel_proxy.h
@@ -12,6 +12,7 @@
 #include "nacl_io/kernel_object.h"
 #include "nacl_io/mount_factory.h"
 #include "nacl_io/mount_socket.h"
+#include "nacl_io/ossignal.h"
 #include "nacl_io/ossocket.h"
 #include "nacl_io/ostypes.h"
 #include "nacl_io/osutime.h"
@@ -125,6 +126,10 @@ class KernelProxy : protected KernelObject {
   virtual int tcsetattr(int fd, int optional_actions,
                            const struct termios *termios_p);
 
+  virtual int kill(pid_t pid, int sig);
+  virtual sighandler_t signal(int signum, sighandler_t handler);
+  virtual sighandler_t sigset(int signum, sighandler_t handler);
+
 #ifdef PROVIDES_SOCKET_API
   virtual int select(int nfds, fd_set* readfds, fd_set* writefds,
                     fd_set* exceptfds, struct timeval* timeout);
@@ -179,6 +184,7 @@ class KernelProxy : protected KernelObject {
   int dev_;
   PepperInterface* ppapi_;
   static KernelProxy *s_instance_;
+  sighandler_t sigwinch_handler_;

[binji, 2013/08/21 17:42:01]

kernel_proxy is a bit of a god class, so can very easily become a dumping
ground... I'd like to see stuff like this moved into its own class, and
kernel_proxy just delegates to it.

Maybe a SignalHandler class?

 #ifdef PROVIDES_SOCKET_API
   HostResolver host_resolver_;
 #endif