Initial commit.

2011-06-21 06:23:29 -07:00
commit 18af5226ba
587 changed files with 45117 additions and 0 deletions
--- a/examples/aobench_instrumented/instrument.cpp
+++ b/examples/aobench_instrumented/instrument.cpp
@@ -0,0 +1,94 @@
+/*
+  Copyright (c) 2010-2011, Intel Corporation
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are
+  met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+    * Neither the name of Intel Corporation nor the names of its
+      contributors may be used to endorse or promote products derived from
+      this software without specific prior written permission.
+
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+   IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+   TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+   PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
+*/
+
+#include "instrument.h"
+#include <stdio.h>
+#include <assert.h>
+#include <string>
+#include <map>
+
+struct CallInfo {
+    CallInfo() { count = laneCount = allOff = 0; }
+    int count;
+    int laneCount;
+    int allOff;
+};
+
+static std::map<std::string, CallInfo> callInfo;
+
+int countbits(int i) {
+    int ret = 0;
+    while (i) {
+        if (i & 0x1)
+            ++ret;
+        i >>= 1;
+    }
+    return ret;
+}
+
+
+// Callback function that ispc compiler emits calls to when --instrument
+// command-line flag is given while compiling.
+void
+ISPCInstrument(const char *fn, const char *note, int line, int mask) {
+    char sline[16];
+    sprintf(sline, "%04d", line);
+    std::string s = std::string(fn) + std::string("(") + std::string(sline) +
+        std::string(") - ") + std::string(note);
+
+    // Find or create a CallInfo instance for this callsite.
+    CallInfo &ci = callInfo[s];
+
+    // And update its statistics... 
+    ++ci.count;
+    if (mask == 0)
+        ++ci.allOff;
+    ci.laneCount += countbits(mask);
+}
+
+
+void
+ISPCPrintInstrument() {
+    // When program execution is done, go through the stats and print them
+    // out.  (This function is called by ao.cpp).
+    std::map<std::string, CallInfo>::iterator citer = callInfo.begin();
+    while (citer != callInfo.end()) {
+        CallInfo &ci = citer->second;
+        float activePct = 100.f * ci.laneCount / (4.f * ci.count);
+        float allOffPct = 100.f * ci.allOff / ci.count;
+        printf("%s: %d calls (%d / %.2f%% all off!), %.2f%% active lanes\n",
+               citer->first.c_str(), ci.count, ci.allOff, allOffPct,
+               activePct);
+        ++citer;
+    }
+}