xnu-2782.1.97.tar.gz

[apple/xnu.git] / tools / tests / perf_index / stress_fault.c

diff --git a/tools/tests/perf_index/stress_fault.c b/tools/tests/perf_index/stress_fault.c
deleted file mode 100644 (file)
index 2942b8f..0000000
--- a/tools/tests/perf_index/stress_fault.c
+++ /dev/null
@@ -1,85 +0,0 @@
-#include "perf_index.h"
-#include <sys/mman.h>
-#include <TargetConditionals.h>
-
-#if TARGET_OS_EMBEDDED
-#define MEMSIZE (1L<<28)
-#else
-#define MEMSIZE (1L<<30)
-#endif
-
-typedef enum {
-  TESTZFOD,
-  TESTFAULT
-} testtype_t;
-
-const stress_test_t fault_test = {"fault", &stress_fault_init, &stress_fault, &stress_general_cleanup, &no_validate};
-const stress_test_t zfod_test =  {"zfod", &stress_fault_init, &stress_zfod, &stress_general_cleanup, &no_validate};
-
-static char *memblock;
-
-DECL_INIT(stress_fault_init) {
-  int pgsz = getpagesize();
-  memblock = (char *)mmap(NULL, MEMSIZE, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE, -1, 0);
-  char *ptr;
-  /* make sure memory is paged */
-  for(ptr = memblock; ptr<memblock+MEMSIZE; ptr+= pgsz) {
-    *ptr = 1;
-  }
-  /* set to read only, then back to read write so it faults on first write */
-  mprotect(memblock, MEMSIZE, PROT_READ);
-  mprotect(memblock, MEMSIZE, PROT_READ | PROT_WRITE);
-}
-
-void stress_fault_helper(int thread_id, int num_threads, long long length, testtype_t testtype) {
-  char *ptr;
-  int pgsz = getpagesize();
-
-  long long num_pages = MEMSIZE / pgsz;
-  long long region_len = num_pages/num_threads;
-  long long region_start = region_len * thread_id; 
-  long long region_end;
-
-  if(thread_id < num_pages % num_threads) {
-    region_start += thread_id;
-    region_len++;
-  }
-  else {
-    region_start += num_pages % num_threads;
-  }
-
-  region_start *= pgsz;
-  region_len *= pgsz;
-  region_end = region_start + region_len;
-
-  long long left = length;
-
-  while(1) {
-    for(ptr = memblock+region_start; ptr<memblock+region_end; ptr+= pgsz) {
-      *ptr = 1;
-      left--;
-      if(left==0)
-        break;
-    }
-
-    if(left==0)
-      break;
-
-    if(testtype == TESTFAULT) {
-      assert(mprotect(memblock+region_start, region_len, PROT_READ) == 0);
-      assert(mprotect(memblock+region_start, region_len, PROT_READ | PROT_WRITE) == 0);
-    }
-    else if(testtype == TESTZFOD) {
-      assert(munmap(memblock+region_start, region_len) == 0);
-      assert(mmap(memblock+region_start, region_len, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0)!=0);
-    }
-  }
-}
-
-DECL_TEST(stress_fault) {
-  stress_fault_helper(thread_id, num_threads, length, TESTFAULT);
-}
-
-DECL_TEST(stress_zfod) {
-  stress_fault_helper(thread_id, num_threads, length, TESTZFOD);
-}