[sanitizer] More dead code removal

Summary:
The following functions are only used in tests: `SetEnv`,
`SanitizerSetThreadName`, `SanitizerGetThreadName`. I don't think they are
going to be used in the future, and I propose to get rid of them, and associated
tests and include.

Reviewers: alekseyshl, eugenis, vitalybuka

Reviewed By: vitalybuka

Subscribers: dvyukov, vitalybuka, kubamracek, delcypher, llvm-commits, #sanitizers

Differential Revision: https://reviews.llvm.org/D45838

llvm-svn: 330724

3 files changed, 0 insertions, 49 deletions

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common.h b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
index 5e7a9dd665c..4c28659edf3 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
@@ -308,13 +308,6 @@ void NORETURN ReportMmapFailureAndDie(uptr size, const char *mem_type,
                                       const char *mmap_type, error_t err,
                                       bool raw_report = false);
 
-// Set the name of the current thread to 'name', return true on succees.
-// The name may be truncated to a system-dependent limit.
-bool SanitizerSetThreadName(const char *name);
-// Get the name of the current thread (no more than max_len bytes),
-// return true on succees. name should have space for at least max_len+1 bytes.
-bool SanitizerGetThreadName(char *name, int max_len);
-
 // Specific tools may override behavior of "Die" and "CheckFailed" functions
 // to do tool-specific job.
 typedef void (*DieCallbackType)(void);
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cc b/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cc
index 3ce0c48e04f..25bb80d823f 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cc
@@ -55,10 +55,6 @@
 #include <thread.h>
 #endif
 
-#if SANITIZER_LINUX
-#include <sys/prctl.h>
-#endif
-
 #if SANITIZER_ANDROID
 #include <android/api-level.h>
 #if !defined(CPU_COUNT) && !defined(__aarch64__)
@@ -161,27 +157,6 @@ bool SetEnv(const char *name, const char *value) {
 }
 #endif
 
-bool SanitizerSetThreadName(const char *name) {
-#ifdef PR_SET_NAME
-  return 0 == prctl(PR_SET_NAME, (unsigned long)name, 0, 0, 0);  // NOLINT
-#else
-  return false;
-#endif
-}
-
-bool SanitizerGetThreadName(char *name, int max_len) {
-#ifdef PR_GET_NAME
-  char buff[17];
-  if (prctl(PR_GET_NAME, (unsigned long)buff, 0, 0, 0))  // NOLINT
-    return false;
-  internal_strncpy(name, buff, max_len);
-  name[max_len] = 0;
-  return true;
-#else
-  return false;
-#endif
-}
-
 #if !SANITIZER_FREEBSD && !SANITIZER_ANDROID && !SANITIZER_GO &&               \
     !SANITIZER_NETBSD && !SANITIZER_OPENBSD && !SANITIZER_SOLARIS
 static uptr g_tls_size;
diff --git a/compiler-rt/lib/sanitizer_common/tests/sanitizer_common_test.cc b/compiler-rt/lib/sanitizer_common/tests/sanitizer_common_test.cc
index 576649cea35..e189fa06cb7 100644
--- a/compiler-rt/lib/sanitizer_common/tests/sanitizer_common_test.cc
+++ b/compiler-rt/lib/sanitizer_common/tests/sanitizer_common_test.cc
@@ -88,23 +88,6 @@ TEST(SanitizerCommon, MmapAlignedOrDieOnFatalError) {
   }
 }
 
-#if SANITIZER_LINUX
-TEST(SanitizerCommon, SanitizerSetThreadName) {
-  const char *names[] = {
-    "0123456789012",
-    "01234567890123",
-    "012345678901234",  // Larger names will be truncated on linux.
-  };
-
-  for (size_t i = 0; i < ARRAY_SIZE(names); i++) {
-    EXPECT_TRUE(SanitizerSetThreadName(names[i]));
-    char buff[100];
-    EXPECT_TRUE(SanitizerGetThreadName(buff, sizeof(buff) - 1));
-    EXPECT_EQ(0, internal_strcmp(buff, names[i]));
-  }
-}
-#endif
-
 TEST(SanitizerCommon, InternalMmapVector) {
   InternalMmapVector<uptr> vector(1);
   for (uptr i = 0; i < 100; i++) {