1 files changed, 89 insertions, 0 deletions
diff --git a/deps/jemalloc/msvc/test_threads/test_threads.cpp b/deps/jemalloc/msvc/test_threads/test_threads.cpp
new file mode 100644
index 0000000..6eed028
--- /dev/null
+++ b/deps/jemalloc/msvc/test_threads/test_threads.cpp
@@ -0,0 +1,89 @@
+// jemalloc C++ threaded test
+// Author: Rustam Abdullaev
+// Public Domain
+
+#include <atomic>
+#include <functional>
+#include <future>
+#include <random>
+#include <thread>
+#include <vector>
+#include <stdio.h>
+#define JEMALLOC_NO_DEMANGLE
+#include <jemalloc/jemalloc.h>
+
+using std::vector;
+using std::thread;
+using std::uniform_int_distribution;
+using std::minstd_rand;
+
+int test_threads() {
+  je_malloc_conf = "narenas:3";
+  int narenas = 0;
+  size_t sz = sizeof(narenas);
+  je_mallctl("opt.narenas", (void *)&narenas, &sz, NULL, 0);
+  if (narenas != 3) {
+    printf("Error: unexpected number of arenas: %d\n", narenas);
+    return 1;
+  }
+  static const int sizes[] = { 7, 16, 32, 60, 91, 100, 120, 144, 169, 199, 255, 400, 670, 900, 917, 1025, 3333, 5190, 13131, 49192, 99999, 123123, 255265, 2333111 };
+  static const int numSizes = (int)(sizeof(sizes) / sizeof(sizes[0]));
+  vector<thread> workers;
+  static const int numThreads = narenas + 1, numAllocsMax = 25, numIter1 = 50, numIter2 = 50;
+  je_malloc_stats_print(NULL, NULL, NULL);
+  size_t allocated1;
+  size_t sz1 = sizeof(allocated1);
+  je_mallctl("stats.active", (void *)&allocated1, &sz1, NULL, 0);
+  printf("\nPress Enter to start threads...\n");
+  getchar();
+  printf("Starting %d threads x %d x %d iterations...\n", numThreads, numIter1, numIter2);
+  for (int i = 0; i < numThreads; i++) {
+    workers.emplace_back([tid=i]() {
+      uniform_int_distribution<int> sizeDist(0, numSizes - 1);
+      minstd_rand rnd(tid * 17);
+      uint8_t* ptrs[numAllocsMax];
+      int ptrsz[numAllocsMax];
+      for (int i = 0; i < numIter1; ++i) {
+        thread t([&]() {
+          for (int i = 0; i < numIter2; ++i) {
+            const int numAllocs = numAllocsMax - sizeDist(rnd);
+            for (int j = 0; j < numAllocs; j += 64) {
+              const int x = sizeDist(rnd);
+              const int sz = sizes[x];
+              ptrsz[j] = sz;
+              ptrs[j] = (uint8_t*)je_malloc(sz);
+              if (!ptrs[j]) {
+                printf("Unable to allocate %d bytes in thread %d, iter %d, alloc %d. %d\n", sz, tid, i, j, x);
+                exit(1);
+              }
+              for (int k = 0; k < sz; k++)
+                ptrs[j][k] = tid + k;
+            }
+            for (int j = 0; j < numAllocs; j += 64) {
+              for (int k = 0, sz = ptrsz[j]; k < sz; k++)
+                if (ptrs[j][k] != (uint8_t)(tid + k)) {
+                  printf("Memory error in thread %d, iter %d, alloc %d @ %d : %02X!=%02X\n", tid, i, j, k, ptrs[j][k], (uint8_t)(tid + k));
+                  exit(1);
+                }
+              je_free(ptrs[j]);
+            }
+          }
+        });
+        t.join();
+      }
+    });
+  }
+  for (thread& t : workers) {
+    t.join();
+  }
+  je_malloc_stats_print(NULL, NULL, NULL);
+  size_t allocated2;
+  je_mallctl("stats.active", (void *)&allocated2, &sz1, NULL, 0);
+  size_t leaked = allocated2 - allocated1;
+  printf("\nDone. Leaked: %zd bytes\n", leaked);
+  bool failed = leaked > 65536; // in case C++ runtime allocated something (e.g. iostream locale or facet)
+  printf("\nTest %s!\n", (failed ? "FAILED" : "successful"));
+  printf("\nPress Enter to continue...\n");
+  getchar();
+  return failed ? 1 : 0;
+}