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Use 'timer_getoverrun' on Cygwin when possible

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* configure.ac: Add a check for the 'timer_getoverrun' function.

* src/profiler.c [CYGWIN] : Define 'timer_getoverrun' as a
macro only on versions of Cygwin where it is not already
defined as a function.
This commit is contained in:
Ken Brown 2019-02-17 12:10:26 -05:00
parent 2ede38ce4b
commit eccfdaff5b
2 changed files with 5 additions and 4 deletions
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2
configure.ac
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@ -4126,7 +4126,7 @@ getrusage get_current_dir_name \
lrand48 random rint trunc \
select getpagesize setlocale newlocale \
getrlimit setrlimit shutdown \
pthread_sigmask strsignal setitimer \
pthread_sigmask strsignal setitimer timer_getoverrun \
sendto recvfrom getsockname getifaddrs freeifaddrs \
gai_strerror sync \
getpwent endpwent getgrent endgrent \

7
src/profiler.c
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@ -232,9 +232,10 @@ static EMACS_INT current_sampling_interval;
/* Signal handler for sampling profiler. */
/* timer_getoverrun is not implemented on Cygwin, but the following
seems to be good enough for profiling. */
#ifdef CYGWIN
/* timer_getoverrun is not implemented on Cygwin prior to
cygwin-3.0.0, but the following seems to be good enough for
profiling. */
#if defined CYGWIN && !defined HAVE_TIMER_GETOVERRUN
#define timer_getoverrun(x) 0
#endif