commit 9e39638375cf8063c878531c004b2b82ff785dba
author Qin Zhao <zhaoqin@google.com> Tue May 31 21:27:39 2016 +0000
committer Qin Zhao <zhaoqin@google.com> Tue May 31 21:27:39 2016 +0000
tree 02332603d52d8edfa12e6c915341b0f6492ee741
parent f179364341ef49440757a481b377627d17db3aaa

[esan|cfrag] Add the skeleton to handle the cfrag argument

Summary:
Adds the struct declaration for the cache-fragmentation tool variable
passed to the runtime library.

Updates test struct-simple.cpp.

Reviewers: aizatsky, bruening

Subscribers: filcab, kubabrecka, bruening, kcc, vitalybuka, eugenis, llvm-commits, zhaoqin

Differential Revision: http://reviews.llvm.org/D20542

llvm-svn: 271337

compiler-rt/lib/esan/cache_frag.cpp

diff --git a/compiler-rt/lib/esan/cache_frag.cpp b/compiler-rt/lib/esan/cache_frag.cpp
index 1ab8699..da168dc 100644
--- a/compiler-rt/lib/esan/cache_frag.cpp
+++ b/compiler-rt/lib/esan/cache_frag.cpp
@@ -16,14 +16,34 @@
 
 namespace __esan {
 
+// This should be kept consistent with LLVM's EfficiencySanitizer StructInfo.
+struct StructInfo {
+  const char *StructName;
+  u32 NumOfFields;
+  u64 *FieldCounters;
+  const char **FieldTypeNames;
+};
+
+// This should be kept consistent with LLVM's EfficiencySanitizer CacheFragInfo.
+// The tool-specific information per compilation unit (module).
+struct CacheFragInfo {
+  const char *UnitName;
+  u32 NumOfStructs;
+  StructInfo *Structs;
+};
+
 //===-- Init/exit functions -----------------------------------------------===//
 
 void processCacheFragCompilationUnitInit(void *Ptr) {
-  VPrintf(2, "in esan::%s\n", __FUNCTION__);
+  CacheFragInfo *CacheFrag = (CacheFragInfo *)Ptr;
+  VPrintf(2, "in esan::%s: %s with %u class(es)/struct(s)\n",
+          __FUNCTION__, CacheFrag->UnitName, CacheFrag->NumOfStructs);
 }
 
 void processCacheFragCompilationUnitExit(void *Ptr) {
-  VPrintf(2, "in esan::%s\n", __FUNCTION__);
+  CacheFragInfo *CacheFrag = (CacheFragInfo *)Ptr;
+  VPrintf(2, "in esan::%s: %s with %u class(es)/struct(s)\n",
+          __FUNCTION__, CacheFrag->UnitName, CacheFrag->NumOfStructs);
 }
 
 void initializeCacheFrag() {

compiler-rt/lib/esan/esan.cpp

diff --git a/compiler-rt/lib/esan/esan.cpp b/compiler-rt/lib/esan/esan.cpp
index f0a4965..1f116da 100644
--- a/compiler-rt/lib/esan/esan.cpp
+++ b/compiler-rt/lib/esan/esan.cpp
@@ -219,7 +219,10 @@
 void processCompilationUnitInit(void *Ptr) {
   VPrintf(2, "in esan::%s\n", __FUNCTION__);
   if (WhichTool == ESAN_CacheFrag) {
+    DCHECK(Ptr != nullptr);
     processCacheFragCompilationUnitInit(Ptr);
+  } else {
+    DCHECK(Ptr == nullptr);
   }
 }
 
@@ -228,7 +231,10 @@
 void processCompilationUnitExit(void *Ptr) {
   VPrintf(2, "in esan::%s\n", __FUNCTION__);
   if (WhichTool == ESAN_CacheFrag) {
+    DCHECK(Ptr != nullptr);
     processCacheFragCompilationUnitExit(Ptr);
+  } else {
+    DCHECK(Ptr == nullptr);
   }
 }
 

compiler-rt/test/esan/TestCases/struct-simple.cpp

diff --git a/compiler-rt/test/esan/TestCases/struct-simple.cpp b/compiler-rt/test/esan/TestCases/struct-simple.cpp
index e3670f2..f1dd385 100644
--- a/compiler-rt/test/esan/TestCases/struct-simple.cpp
+++ b/compiler-rt/test/esan/TestCases/struct-simple.cpp
@@ -28,17 +28,17 @@
   // CHECK:      in esan::initializeLibrary
   // CHECK:      in esan::initializeCacheFrag
   // CHECK-NEXT: in esan::processCompilationUnitInit
-  // CHECK-NEXT: in esan::processCacheFragCompilationUnitInit
+  // CHECK-NEXT: in esan::processCacheFragCompilationUnitInit: {{.*}}struct-simple.cpp with 0 class(es)/struct(s)
   // CHECK-NEXT: in esan::processCompilationUnitInit
-  // CHECK-NEXT: in esan::processCacheFragCompilationUnitInit
+  // CHECK-NEXT: in esan::processCacheFragCompilationUnitInit: {{.*}}struct-simple.cpp with 0 class(es)/struct(s)
   part();
   return 0;
   // CHECK:      in esan::finalizeLibrary
   // CHECK-NEXT: in esan::finalizeCacheFrag
   // CHECK-NEXT: {{.*}}EfficiencySanitizer is not finished: nothing yet to report
   // CHECK-NEXT: in esan::processCompilationUnitExit
-  // CHECK-NEXT: in esan::processCacheFragCompilationUnitExit
+  // CHECK-NEXT: in esan::processCacheFragCompilationUnitExit: {{.*}}struct-simple.cpp with 0 class(es)/struct(s)
   // CHECK-NEXT: in esan::processCompilationUnitExit
-  // CHECK-NEXT: in esan::processCacheFragCompilationUnitExit
+  // CHECK-NEXT: in esan::processCacheFragCompilationUnitExit: {{.*}}struct-simple.cpp with 0 class(es)/struct(s)
 }
 #endif // MAIN