Merge pull request #298 from toshok/three-arenas

Add third GC arena

minibenchmarks/pidigits.py

+import time
+
+PIDIGITS_LEN = 1500
+
+def pidigits(length):
+    i = k = ns = 0
+    k1 = 1
+    n,a,d,t,u = 1,0,1,0,0
+    while(True):
+        k += 1
+        t = n<<1
+        n *= k
+        a += t
+        k1 += 2
+        a *= k1
+        d *= k1
+        if a >= n:
+            t,u = divmod(n*3 + a,d)
+            u += n
+            if d > u:
+                ns = ns*10 + t
+                i += 1
+                if i % 10 == 0:
+                    ns = 0
+                if i >= length:
+                    break
+                a -= d*t
+                a *= 10
+                n *= 10
+
+def main(n):
+    l = []
+    for i in range(n):
+        t0 = time.time()
+        pidigits(PIDIGITS_LEN)
+        l.append(time.time() - t0)
+    return l
+
+main(100)

src/gc/gc_alloc.h

@@ -51,6 +51,11 @@ extern "C" inline void* gc_alloc(size_t bytes, GCKind kind_id) {
 #endif
 
     GCAllocation* alloc = global_heap.alloc(alloc_bytes);
+
+#ifndef NVALGRIND
+    VALGRIND_DISABLE_ERROR_REPORTING;
+#endif
+
     alloc->kind_id = kind_id;
     alloc->gc_flags = 0;
 
@@ -67,7 +72,10 @@ extern "C" inline void* gc_alloc(size_t bytes, GCKind kind_id) {
     }
 
     void* r = alloc->user_data;
+
 #ifndef NVALGRIND
+    VALGRIND_ENABLE_ERROR_REPORTING;
+
     if (ENABLE_REDZONES) {
         r = ((char*)r) + REDZONE_SIZE;
     }

test/unittests/gc.cpp

@@ -68,6 +68,9 @@ TEST(alloc, alloc64) { testAlloc(64); }
 TEST(alloc, alloc128) { testAlloc(128); }
 TEST(alloc, alloc258) { testAlloc(258); }
 TEST(alloc, alloc3584) { testAlloc(3584); }
+TEST(alloc, alloc4096) { testAlloc(4096); }
+TEST(alloc, alloc8192) { testAlloc(8192); }
+TEST(alloc, alloc16384) { testAlloc(16384); }
 
 TEST(alloc, largeallocs) {
     int s1 = 1 << 20;