From 831d6fa520ed43d055924607a2d9be7fcc3813e9 Mon Sep 17 00:00:00 2001 From: Christopher Faylor Date: Wed, 30 Oct 2002 21:05:18 +0000 Subject: * external.cc (cygwin_internal): Implement CW_CMDLINE. * pinfo.h (SIGCOMMUNE): New signal type. (commune_result): New structure for commune functions. (picom): New enum for commune functions. (_pinfo::hello_pid): New. Pid who's communicating with me. (_pinfo::tothem): New. Handle of communicating pipe. (_pinfo::fromthem): Ditto. (_pinfo::commune_recv): Declare. (_pinfo::commune_send): Declare. (_pinfo::alive): Declare. (_pinfo::cmdline): Declare. (_pinfo::lock): Declare. * pinfo.cc (set_myself): Initialize new _pinfo lock. (_pinfo::alive): Define. Determines if process still exists. (_pinfo::commune_recv): Define. Receive info from another cooperating process. (_pinfo::commune_send): Define. Send info to another cooperating process. (_pinfo::cmdline): Define. Determine command line of a given process. * include/sys/cygwin.h (CW_CMDLINE): Define. *sigproc.cc (talktome): Communicate with any processes who want to talk to me. (wait_sig): Honor __SIGCOMMUNE. * fhandler.cc (fhandler_virtual::fixup_after_exec): Declare. * fhandler_proc.cc: Use malloc/free/realloc throughout rather than cmalloc since buffers don't need to be propagated to subprocesses. * fhandler_registry.cc: Ditto. * fhandler_virtual.cc: Ditto. (fhandler_virtual::fixup_after_exec): Define. * fhandler_process.cc: Ditto for malloc/free/realloc. (process_listin): Add "cmdline". (fhandler_process::fill_filebuf): Implement PROCESS_CMDLINE. * miscfuncs.cc (isalpha_array): New array populated with xor values for alpha characters to switch from one case to another. * string.h (cygwin_strcasematch): New asm implementation of case match. * string.h (cygwin_nstrcasematch): New asm implementation of counted case match. --- winsup/cygwin/sigproc.cc | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'winsup/cygwin/sigproc.cc') diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc index 9fb1fd498..5eeef7f35 100644 --- a/winsup/cygwin/sigproc.cc +++ b/winsup/cygwin/sigproc.cc @@ -1014,6 +1014,15 @@ stopped_or_terminated (waitq *parent_w, _pinfo *child) return -potential_match; } +static void +talktome () +{ + winpids pids; + for (unsigned i = 0; i < pids.npids; i++) + if (pids[i]->hello_pid == myself->pid) + pids[i]->commune_recv (); +} + /* Process signals by waiting for a semaphore to become signaled. * Then scan an in-memory array representing queued signals. * Executes in a separate thread. @@ -1143,6 +1152,10 @@ wait_sig (VOID *self) strace.hello (); break; + case __SIGCOMMUNE: + talktome (); + break; + /* A normal UNIX signal */ default: sigproc_printf ("Got signal %d", sig); -- cgit v1.2.3