Disable the old QCDOC qalloc by default and copy utility functions from memory.c

1. qalloc() appears to have been a special routine written for the PPC440-based QCDOC supercomputer(s) from around 2005, its source does not seem to be readily available. So switch the #if 1 in the code to rely on standard malloc() by default.
2. Utility functions like get_num_procs, get_num_threads that were added to the "normally" used memory.c in the meantime were still missing here.

Author: martin-frbg

driver/others/memory_qalloc.c

@@ -38,29 +38,37 @@
 
 #include <stdio.h>
 #include "common.h"
+#ifdef OS_LINUX
+#include <sys/sysinfo.h>
+#include <sched.h>
+#include <errno.h>
+#include <linux/unistd.h>
+#include <sys/syscall.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#endif
 
-#ifndef SMP
-#define blas_cpu_number 1
-#else
-
-int blas_cpu_number = 1;
-
-int blas_get_cpu_number(void){
+#ifdef OS_HAIKU
+#include <unistd.h>
+#endif
 
-  return blas_cpu_number;
-}
+#if defined(OS_FREEBSD) || defined(OS_OPENBSD) || defined(OS_NETBSD) || defined(OS_DRAGONFLY) || defined(OS_DARWIN)
+#include <sys/sysctl.h>
+#include <sys/resource.h>
 #endif
 
+
 #define FIXED_PAGESIZE 4096
 
+
 void *sa = NULL;
 void *sb = NULL;
 static double static_buffer[BUFFER_SIZE/sizeof(double)];
 
 void *blas_memory_alloc(int numproc){
 
   if (sa == NULL){
-#if 1
+#if 0
     sa = (void *)qalloc(QFAST, BUFFER_SIZE);
 #else
     sa = (void *)malloc(BUFFER_SIZE);
@@ -75,3 +83,296 @@ void blas_memory_free(void *free_area){
   return;
 }
 
+
+
+extern void openblas_warning(int verbose, const char * msg);
+
+#ifndef SMP
+
+#define blas_cpu_number 1
+#define blas_num_threads 1
+
+/* Dummy Function */
+int  goto_get_num_procs  (void) { return 1;};
+void goto_set_num_threads(int num_threads) {};
+
+#else
+
+#if defined(OS_LINUX) || defined(OS_SUNOS)
+#ifndef NO_AFFINITY
+int get_num_procs(void);
+#else
+int get_num_procs(void) {
+
+  static int nums = 0;
+  cpu_set_t cpuset,*cpusetp;
+  size_t size;
+  int ret;
+
+#if defined(__GLIBC_PREREQ)
+#if !__GLIBC_PREREQ(2, 7)
+  int i;
+#if !__GLIBC_PREREQ(2, 6)
+  int n;
+#endif
+#endif
+#endif
+
+  if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
+#if !defined(OS_LINUX)
+  return nums;
+#endif
+
+/*
+#if !defined(__GLIBC_PREREQ)
+  return nums;
+#else
+ #if !__GLIBC_PREREQ(2, 3)
+  return nums;
+ #endif
+
+ #if !__GLIBC_PREREQ(2, 7)
+  ret = sched_getaffinity(0,sizeof(cpuset), &cpuset);
+  if (ret!=0) return nums;
+  n=0;
+  #if !__GLIBC_PREREQ(2, 6)
+  for (i=0;i<nums;i++)
+     if (CPU_ISSET(i,&cpuset)) n++;
+  nums=n;
+  #else
+  nums = CPU_COUNT(sizeof(cpuset),&cpuset);
+  #endif
+  return nums;
+ #else
+  if (nums >= CPU_SETSIZE) {
+    cpusetp = CPU_ALLOC(nums);
+      if (cpusetp == NULL) {
+        return nums;
+      }
+    size = CPU_ALLOC_SIZE(nums);
+    ret = sched_getaffinity(0,size,cpusetp);
+    if (ret!=0) {
+      CPU_FREE(cpusetp);
+      return nums;
+    }
+    ret = CPU_COUNT_S(size,cpusetp);
+    if (ret > 0 && ret < nums) nums = ret;	
+    CPU_FREE(cpusetp);
+    return nums;
+  } else {
+    ret = sched_getaffinity(0,sizeof(cpuset),&cpuset);
+    if (ret!=0) {
+      return nums;
+    }
+    ret = CPU_COUNT(&cpuset);
+    if (ret > 0 && ret < nums) nums = ret;	
+    return nums;
+  }
+ #endif
+#endif
+*/
+   return 1;
+}
+#endif
+#endif
+
+#ifdef OS_ANDROID
+int get_num_procs(void) {
+  static int nums = 0;
+  if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
+  return nums;
+}
+#endif
+
+#ifdef OS_HAIKU
+int get_num_procs(void) {
+  static int nums = 0;
+  if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
+  return nums;
+}
+#endif
+
+#ifdef OS_AIX
+int get_num_procs(void) {
+  static int nums = 0;
+  if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
+  return nums;
+}
+#endif
+
+#ifdef OS_WINDOWS
+
+int get_num_procs(void) {
+
+  static int nums = 0;
+
+  if (nums == 0) {
+
+    SYSTEM_INFO sysinfo;
+
+    GetSystemInfo(&sysinfo);
+
+    nums = sysinfo.dwNumberOfProcessors;
+  }
+
+  return nums;
+}
+
+#endif
+
+#if defined(OS_FREEBSD) || defined(OS_OPENBSD) || defined(OS_NETBSD) || defined(OS_DRAGONFLY)
+
+int get_num_procs(void) {
+
+  static int nums = 0;
+
+  int m[2];
+  size_t len;
+
+  if (nums == 0) {
+    m[0] = CTL_HW;
+    m[1] = HW_NCPU;
+    len = sizeof(int);
+    sysctl(m, 2, &nums, &len, NULL, 0);
+  }
+
+  return nums;
+}
+
+#endif
+
+#if defined(OS_DARWIN)
+int get_num_procs(void) {
+  static int nums = 0;
+  size_t len;
+  if (nums == 0){
+    len = sizeof(int);
+    sysctlbyname("hw.physicalcpu", &nums, &len, NULL, 0);
+  }
+  return nums;
+}
+/*
+void set_stack_limit(int limitMB){
+  int result=0;
+  struct rlimit rl;
+  rlim_t StackSize;
+
+  StackSize=limitMB*1024*1024;
+  result=getrlimit(RLIMIT_STACK, &rl);
+  if(result==0){
+    if(rl.rlim_cur < StackSize){
+      rl.rlim_cur=StackSize;
+      result=setrlimit(RLIMIT_STACK, &rl);
+      if(result !=0){
+        fprintf(stderr, "OpenBLAS: set stack limit error =%d\n", result);
+      }
+    }
+  }
+}
+*/
+#endif
+
+
+/*
+OpenBLAS uses the numbers of CPU cores in multithreading.
+It can be set by openblas_set_num_threads(int num_threads);
+*/
+int blas_cpu_number  = 0;
+/*
+The numbers of threads in the thread pool.
+This value is equal or large than blas_cpu_number. This means some threads are sleep.
+*/
+int blas_num_threads = 0;
+
+int  goto_get_num_procs  (void) {
+  return blas_cpu_number;
+}
+
+void openblas_fork_handler()
+{
+  // This handler shuts down the OpenBLAS-managed PTHREAD pool when OpenBLAS is
+  // built with "make USE_OPENMP=0".
+  // Hanging can still happen when OpenBLAS is built against the libgomp
+  // implementation of OpenMP. The problem is tracked at:
+  //   http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60035
+  // In the mean time build with USE_OPENMP=0 or link against another
+  // implementation of OpenMP.
+#if !((defined(OS_WINDOWS) && !defined(OS_CYGWIN_NT)) || defined(OS_ANDROID)) && defined(SMP_SERVER)
+  int err;
+  err = pthread_atfork ((void (*)(void)) BLASFUNC(blas_thread_shutdown), NULL, NULL);
+  if(err != 0)
+    openblas_warning(0, "OpenBLAS Warning ... cannot install fork handler. You may meet hang after fork.\n");
+#endif
+}
+
+extern int openblas_num_threads_env();
+extern int openblas_goto_num_threads_env();
+extern int openblas_omp_num_threads_env();
+
+int blas_get_cpu_number(void){
+#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FREEBSD) || defined(OS_OPENBSD) || defined(OS_NETBSD) || defined(OS_DRAGONFLY) || defined(OS_DARWIN) || defined(OS_ANDROID)
+  int max_num;
+#endif
+  int blas_goto_num   = 0;
+  int blas_omp_num    = 0;
+
+  if (blas_num_threads) return blas_num_threads;
+
+#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FREEBSD) || defined(OS_OPENBSD) || defined(OS_NETBSD) || defined(OS_DRAGONFLY) || defined(OS_DARWIN) || defined(OS_ANDROID)
+  max_num = get_num_procs();
+#endif
+
+  // blas_goto_num = 0;
+#ifndef USE_OPENMP
+  blas_goto_num=openblas_num_threads_env();
+  if (blas_goto_num < 0) blas_goto_num = 0;
+
+  if (blas_goto_num == 0) {
+    blas_goto_num=openblas_goto_num_threads_env();
+    if (blas_goto_num < 0) blas_goto_num = 0;
+  }
+
+#endif
+
+  // blas_omp_num = 0;
+  blas_omp_num=openblas_omp_num_threads_env();
+  if (blas_omp_num < 0) blas_omp_num = 0;
+
+  if (blas_goto_num > 0) blas_num_threads = blas_goto_num;
+  else if (blas_omp_num > 0) blas_num_threads = blas_omp_num;
+  else blas_num_threads = MAX_CPU_NUMBER;
+
+#if defined(OS_LINUX) || defined(OS_WINDOWS) || defined(OS_FREEBSD) || defined(OS_OPENBSD) || defined(OS_NETBSD) || defined(OS_DRAGONFLY) || defined(OS_DARWIN) || defined(OS_ANDROID)
+  if (blas_num_threads > max_num) blas_num_threads = max_num;
+#endif
+
+  if (blas_num_threads > MAX_CPU_NUMBER) blas_num_threads = MAX_CPU_NUMBER;
+
+#ifdef DEBUG
+  printf( "Adjusted number of threads : %3d\n", blas_num_threads);
+#endif
+
+  blas_cpu_number = blas_num_threads;
+
+  return blas_num_threads;
+}
+#endif
+
+
+int openblas_get_num_procs(void) {
+#ifndef SMP
+  return 1;
+#else
+  return get_num_procs();
+#endif
+}
+
+int openblas_get_num_threads(void) {
+#ifndef SMP
+  return 1;
+#else
+  // init blas_cpu_number if needed
+  blas_get_cpu_number();
+  return blas_cpu_number;
+#endif
+}