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comparison src/syssignal.h @ 2286:04bc9d2f42c7

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[xemacs-hg @ 2004-09-20 19:18:55 by james] Mark all unused parameters as unused. Also eliminate some unneeded local variables.
author james
date Mon, 20 Sep 2004 19:20:08 +0000
parents 13e47461d509
children 3580ae2ce979
comparison
equal deleted inserted replaced
2285:914c5afaac33 2286:04bc9d2f42c7
146 sigprocmask (0, NULL, &ES_mask); \ 146 sigprocmask (0, NULL, &ES_mask); \
147 sigdelset (&ES_mask, sig); \ 147 sigdelset (&ES_mask, sig); \
148 sigsuspend (&ES_mask); \ 148 sigsuspend (&ES_mask); \
149 } while (0) 149 } while (0)
150 #define EMACS_REESTABLISH_SIGNAL(sig, handler) 150 #define EMACS_REESTABLISH_SIGNAL(sig, handler)
151 #define SIG_ARG_MAYBE_UNUSED(decl) UNUSED (decl)
151 152
152 #elif defined (HAVE_SIGBLOCK) 153 #elif defined (HAVE_SIGBLOCK)
153 154
154 /* The older BSD way (signal/sigvec, sigblock, sigsetmask, sigpause) */ 155 /* The older BSD way (signal/sigvec, sigblock, sigsetmask, sigpause) */
155 156
171 { \ 172 { \
172 int ES_mask = sigblock (0); \ 173 int ES_mask = sigblock (0); \
173 sigpause (ES_mask & ~sigmask (sig)); \ 174 sigpause (ES_mask & ~sigmask (sig)); \
174 } while (0) 175 } while (0)
175 #define EMACS_REESTABLISH_SIGNAL(sig, handler) 176 #define EMACS_REESTABLISH_SIGNAL(sig, handler)
177 #define SIG_ARG_MAYBE_UNUSED(decl) UNUSED (decl)
176 178
177 #elif defined (HAVE_SIGHOLD) 179 #elif defined (HAVE_SIGHOLD)
178 180
179 /* The older SYSV way (signal/sigset, sighold, sigrelse, sigignore, 181 /* The older SYSV way (signal/sigset, sighold, sigrelse, sigignore,
180 sigpause) */ 182 sigpause) */
186 Since EMACS_UNBLOCK_ALL_SIGNALS() is only called once (at startup), 188 Since EMACS_UNBLOCK_ALL_SIGNALS() is only called once (at startup),
187 it's probably OK to just ignore it. */ 189 it's probably OK to just ignore it. */
188 #define EMACS_UNBLOCK_ALL_SIGNALS() 0 190 #define EMACS_UNBLOCK_ALL_SIGNALS() 0
189 #define EMACS_WAIT_FOR_SIGNAL(sig) sigpause (sig) 191 #define EMACS_WAIT_FOR_SIGNAL(sig) sigpause (sig)
190 #define EMACS_REESTABLISH_SIGNAL(sig, handler) 192 #define EMACS_REESTABLISH_SIGNAL(sig, handler)
193 #define SIG_ARG_MAYBE_UNUSED(decl) UNUSED (decl)
191 194
192 #elif defined (WIN32_NATIVE) 195 #elif defined (WIN32_NATIVE)
193 196
194 /* MS Windows signal emulation (in turns emulates the sigset/sighold 197 /* MS Windows signal emulation (in turns emulates the sigset/sighold
195 paradigm) */ 198 paradigm) */
201 Since EMACS_UNBLOCK_ALL_SIGNALS() is only called once (at startup), 204 Since EMACS_UNBLOCK_ALL_SIGNALS() is only called once (at startup),
202 it's probably OK to just ignore it. */ 205 it's probably OK to just ignore it. */
203 #define EMACS_UNBLOCK_ALL_SIGNALS() 0 206 #define EMACS_UNBLOCK_ALL_SIGNALS() 0
204 #define EMACS_WAIT_FOR_SIGNAL(sig) mswindows_sigpause (sig) 207 #define EMACS_WAIT_FOR_SIGNAL(sig) mswindows_sigpause (sig)
205 #define EMACS_REESTABLISH_SIGNAL(sig, handler) 208 #define EMACS_REESTABLISH_SIGNAL(sig, handler)
209 #define SIG_ARG_MAYBE_UNUSED(decl) UNUSED (decl)
206 210
207 /* Defines that we need that aren't in the standard signal.h */ 211 /* Defines that we need that aren't in the standard signal.h */
208 #define SIGHUP 1 /* Hang up */ 212 #define SIGHUP 1 /* Hang up */
209 #define SIGQUIT 3 /* Quit process */ 213 #define SIGQUIT 3 /* Quit process */
210 #define SIGKILL 9 /* Die, die die */ 214 #define SIGKILL 9 /* Die, die die */
225 { \ 229 { \
226 int old_errno = errno; \ 230 int old_errno = errno; \
227 signal (sig, handler); \ 231 signal (sig, handler); \
228 errno = old_errno; \ 232 errno = old_errno; \
229 } while (0) 233 } while (0)
234 #define SIG_ARG_MAYBE_UNUSED(decl) decl
230 235
231 /* Under SYSV, setting a signal handler for SIGCLD causes 236 /* Under SYSV, setting a signal handler for SIGCLD causes
232 SIGCLD to immediately be sent if there any unwaited processes 237 SIGCLD to immediately be sent if there any unwaited processes
233 out there. This means that the SIGCLD handler *must* call 238 out there. This means that the SIGCLD handler *must* call
234 wait() to reap the status of all processes -- it cannot 239 wait() to reap the status of all processes -- it cannot