ext/pcntl: add pcntl_getcpu support for solaris.

using getcpuid having similar signature too.

Author: devnexen

ext/pcntl/config.m4

@@ -7,7 +7,8 @@ if test "$PHP_PCNTL" != "no"; then
   AC_CHECK_FUNCS([fork], [], [AC_MSG_ERROR([pcntl: fork() not supported by this platform])])
   AC_CHECK_FUNCS([waitpid], [], [AC_MSG_ERROR([pcntl: waitpid() not supported by this platform])])
   AC_CHECK_FUNCS([sigaction], [], [AC_MSG_ERROR([pcntl: sigaction() not supported by this platform])])
-  AC_CHECK_FUNCS([getpriority setpriority wait3 wait4 sigwaitinfo sigtimedwait unshare rfork forkx pidfd_open sched_setaffinity pthread_set_qos_class_self_np])
+  AC_CHECK_FUNCS([getpriority setpriority wait3 wait4 sigwaitinfo sigtimedwait unshare rfork forkx pidfd_open])
+  AC_CHECK_FUNCS([sched_setaffinity pthread_set_qos_class_self_np getcpuid])
 
   dnl if unsupported, -1 means automatically ENOSYS in this context
   AC_MSG_CHECKING([if sched_getcpu is supported])

ext/pcntl/pcntl.c

@@ -78,6 +78,12 @@ typedef cpuset_t *cpu_set_t;
  #define HAVE_SCHED_SETAFFINITY 1
 #endif
 
+#if defined(HAVE_GETCPUID)
+#include <sys/processor.h>
+#define sched_getcpu getcpuid
+#define HAVE_SCHED_GETCPU 1
+#endif
+
 #if defined(HAVE_PTHREAD_SET_QOS_CLASS_SELF_NP)
 #include <pthread/qos.h>
 static zend_class_entry *QosClass_ce;