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git/thread-utils.c

126 lines
2.6 KiB

#include "cache.h"
Fix sparse warnings Fix warnings from 'make check'. - These files don't include 'builtin.h' causing sparse to complain that cmd_* isn't declared: builtin/clone.c:364, builtin/fetch-pack.c:797, builtin/fmt-merge-msg.c:34, builtin/hash-object.c:78, builtin/merge-index.c:69, builtin/merge-recursive.c:22 builtin/merge-tree.c:341, builtin/mktag.c:156, builtin/notes.c:426 builtin/notes.c:822, builtin/pack-redundant.c:596, builtin/pack-refs.c:10, builtin/patch-id.c:60, builtin/patch-id.c:149, builtin/remote.c:1512, builtin/remote-ext.c:240, builtin/remote-fd.c:53, builtin/reset.c:236, builtin/send-pack.c:384, builtin/unpack-file.c:25, builtin/var.c:75 - These files have symbols which should be marked static since they're only file scope: submodule.c:12, diff.c:631, replace_object.c:92, submodule.c:13, submodule.c:14, trace.c:78, transport.c:195, transport-helper.c:79, unpack-trees.c:19, url.c:3, url.c:18, url.c:104, url.c:117, url.c:123, url.c:129, url.c:136, thread-utils.c:21, thread-utils.c:48 - These files redeclare symbols to be different types: builtin/index-pack.c:210, parse-options.c:564, parse-options.c:571, usage.c:49, usage.c:58, usage.c:63, usage.c:72 - These files use a literal integer 0 when they really should use a NULL pointer: daemon.c:663, fast-import.c:2942, imap-send.c:1072, notes-merge.c:362 While we're in the area, clean up some unused #includes in builtin files (mostly exec_cmd.h). Signed-off-by: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
12 years ago
#include "thread-utils.h"
#if defined(hpux) || defined(__hpux) || defined(_hpux)
# include <sys/pstat.h>
#endif
/*
* By doing this in two steps we can at least get
* the function to be somewhat coherent, even
* with this disgusting nest of #ifdefs.
*/
#ifndef _SC_NPROCESSORS_ONLN
# ifdef _SC_NPROC_ONLN
# define _SC_NPROCESSORS_ONLN _SC_NPROC_ONLN
# elif defined _SC_CRAY_NCPU
# define _SC_NPROCESSORS_ONLN _SC_CRAY_NCPU
# endif
#endif
int online_cpus(void)
{
#ifdef NO_PTHREADS
return 1;
#else
#ifdef _SC_NPROCESSORS_ONLN
long ncpus;
#endif
#ifdef GIT_WINDOWS_NATIVE
SYSTEM_INFO info;
GetSystemInfo(&info);
if ((int)info.dwNumberOfProcessors > 0)
return (int)info.dwNumberOfProcessors;
#elif defined(hpux) || defined(__hpux) || defined(_hpux)
struct pst_dynamic psd;
if (!pstat_getdynamic(&psd, sizeof(psd), (size_t)1, 0))
return (int)psd.psd_proc_cnt;
#elif defined(HAVE_BSD_SYSCTL) && defined(HW_NCPU)
int mib[2];
size_t len;
int cpucount;
mib[0] = CTL_HW;
# ifdef HW_AVAILCPU
mib[1] = HW_AVAILCPU;
len = sizeof(cpucount);
if (!sysctl(mib, 2, &cpucount, &len, NULL, 0))
return cpucount;
# endif /* HW_AVAILCPU */
mib[1] = HW_NCPU;
len = sizeof(cpucount);
if (!sysctl(mib, 2, &cpucount, &len, NULL, 0))
return cpucount;
#endif /* defined(HAVE_BSD_SYSCTL) && defined(HW_NCPU) */
#ifdef _SC_NPROCESSORS_ONLN
if ((ncpus = (long)sysconf(_SC_NPROCESSORS_ONLN)) > 0)
return (int)ncpus;
#endif
return 1;
#endif
}
int init_recursive_mutex(pthread_mutex_t *m)
{
#ifndef NO_PTHREADS
pthread_mutexattr_t a;
int ret;
ret = pthread_mutexattr_init(&a);
if (!ret) {
ret = pthread_mutexattr_settype(&a, PTHREAD_MUTEX_RECURSIVE);
if (!ret)
ret = pthread_mutex_init(m, &a);
pthread_mutexattr_destroy(&a);
}
return ret;
#else
return 0;
#endif
}
#ifdef NO_PTHREADS
int dummy_pthread_create(pthread_t *pthread, const void *attr,
void *(*fn)(void *), void *data)
{
/*
* Do nothing.
*
* The main purpose of this function is to break compiler's
* flow analysis and avoid -Wunused-variable false warnings.
*/
return ENOSYS;
}
int dummy_pthread_init(void *data)
{
/*
* Do nothing.
*
* The main purpose of this function is to break compiler's
* flow analysis or it may realize that functions like
* pthread_mutex_init() is no-op, which means the (static)
* variable is not used/initialized at all and trigger
* -Wunused-variable
*/
return ENOSYS;
}
int dummy_pthread_join(pthread_t pthread, void **retval)
{
/*
* Do nothing.
*
* The main purpose of this function is to break compiler's
* flow analysis and avoid -Wunused-variable false warnings.
*/
return ENOSYS;
}
#endif