X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fevent-loop.c;h=2c71de3499992845cc26e37dd0a8ca492400c8bb;hb=474d0ad39b9380f2ce83648a145e6ad77cf2520f;hp=2f3d5359b79baa94fc2e30b3f11c9e1aea6b0f52;hpb=3aa6b2ca26ffaeeb2e3fb7a7c725829df8ad3601;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/event-loop.c b/gdb/event-loop.c index 2f3d5359b7..2c71de3499 100644 --- a/gdb/event-loop.c +++ b/gdb/event-loop.c @@ -1,5 +1,6 @@ /* Event loop machinery for GDB, the GNU debugger. - Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc. + Copyright (C) 1999, 2000, 2001, 2002, 2005, 2006, 2007 + Free Software Foundation, Inc. Written by Elena Zannoni of Cygnus Solutions. This file is part of GDB. @@ -16,8 +17,8 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. */ #include "defs.h" #include "event-loop.h" @@ -37,6 +38,7 @@ #include #include "exceptions.h" #include "gdb_assert.h" +#include "gdb_select.h" typedef struct gdb_event gdb_event; typedef void (event_handler_func) (int); @@ -731,84 +733,6 @@ handle_file_event (int event_file_desc) } } -/* Wrapper for select. This function is not yet exported from this - file because it is not sufficiently general. For example, - ser-base.c uses select to check for socket activity, and this - function does not support sockets under Windows, so we do not want - to use gdb_select in ser-base.c. */ - -static int -gdb_select (int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, - struct timeval *timeout) -{ -#ifdef USE_WIN32API - HANDLE handles[MAXIMUM_WAIT_OBJECTS]; - HANDLE h; - DWORD event; - DWORD num_handles; - int fd; - int num_ready; - - num_handles = 0; - for (fd = 0; fd < n; ++fd) - { - /* EXCEPTFDS is silently ignored. GDB always sets GDB_EXCEPTION - when calling add_file_handler, but there is no natural analog - under Windows. */ - /* There is no support yet for WRITEFDS. At present, this isn't - used by GDB -- but we do not want to silently ignore WRITEFDS - if something starts using it. */ - gdb_assert (!FD_ISSET (fd, writefds)); - if (FD_ISSET (fd, readfds)) - { - gdb_assert (num_handles < MAXIMUM_WAIT_OBJECTS); - handles[num_handles++] = (HANDLE) _get_osfhandle (fd); - } - } - event = WaitForMultipleObjects (num_handles, - handles, - FALSE, - timeout - ? (timeout->tv_sec * 1000 + timeout->tv_usec) - : INFINITE); - /* EVENT can only be a value in the WAIT_ABANDONED_0 range if the - HANDLES included an abandoned mutex. Since GDB doesn't use - mutexes, that should never occur. */ - gdb_assert (!(WAIT_ABANDONED_0 <= event - && event < WAIT_ABANDONED_0 + num_handles)); - if (event == WAIT_FAILED) - return -1; - if (event == WAIT_TIMEOUT) - return 0; - /* Run through the READFDS, clearing bits corresponding to descriptors - for which input is unavailable. */ - num_ready = num_handles; - h = handles[event - WAIT_OBJECT_0]; - for (fd = 0; fd < n; ++fd) - { - HANDLE fd_h; - if (!FD_ISSET (fd, readfds)) - continue; - fd_h = (HANDLE) _get_osfhandle (fd); - /* This handle might be ready, even though it wasn't the handle - returned by WaitForMultipleObjects. */ - if (fd_h != h && WaitForSingleObject (fd_h, 0) != WAIT_OBJECT_0) - { - FD_CLR (fd, readfds); - --num_ready; - } - } - /* We never report any descriptors available for writing or with - exceptional conditions. */ - FD_ZERO (writefds); - FD_ZERO (exceptfds); - - return num_ready; -#else - return select (n, readfds, writefds, exceptfds, timeout); -#endif -} - /* Called by gdb_do_one_event to wait for new events on the monitored file descriptors. Queue file events as they are detected by the poll.