From 249301376865578b7f9678cc97c0f8b6f78623f6 Mon Sep 17 00:00:00 2001
From: Kenneth Heafield <kenlm@kheafield.com>
Date: Fri, 9 Mar 2012 16:35:10 -0500
Subject: KenLM d45e2be including CreateOrThrow for Jon

---
 klm/lm/left.hh   |  2 +-
 klm/util/file.cc | 10 ++++++++++
 klm/util/file.hh |  3 +++
 klm/util/mmap.cc | 14 --------------
 4 files changed, 14 insertions(+), 15 deletions(-)

diff --git a/klm/lm/left.hh b/klm/lm/left.hh
index 41f71f84..a07f9803 100644
--- a/klm/lm/left.hh
+++ b/klm/lm/left.hh
@@ -112,7 +112,7 @@ inline size_t hash_value(const ChartState &state) {
   size_t hashes[2];
   hashes[0] = hash_value(state.left);
   hashes[1] = hash_value(state.right);
-  return util::MurmurHashNative(hashes, sizeof(size_t), state.full);
+  return util::MurmurHashNative(hashes, sizeof(size_t) * 2, state.full);
 }
 
 template <class M> class RuleScore {
diff --git a/klm/util/file.cc b/klm/util/file.cc
index aee7c77a..176737fa 100644
--- a/klm/util/file.cc
+++ b/klm/util/file.cc
@@ -42,6 +42,16 @@ int OpenReadOrThrow(const char *name) {
   return ret;
 }
 
+int CreateOrThrow(const char *name) {
+  int ret;
+#if defined(_WIN32) || defined(_WIN64)
+  UTIL_THROW_IF(-1 == (ret = _open(name, _O_CREAT | _O_TRUNC | _O_RDWR, _S_IREAD | _S_IWRITE)), ErrnoException, "while creating " << name);
+#else
+  UTIL_THROW_IF(-1 == (ret = open(name, O_CREAT | O_TRUNC | O_RDWR, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)), ErrnoException, "while creating " << name);
+#endif
+  return ret;
+}
+
 uint64_t SizeFile(int fd) {
 #if defined(_WIN32) || defined(_WIN64)
   __int64 ret = _filelengthi64(fd);
diff --git a/klm/util/file.hh b/klm/util/file.hh
index 5c57e2a9..72c8ea76 100644
--- a/klm/util/file.hh
+++ b/klm/util/file.hh
@@ -65,7 +65,10 @@ class scoped_FILE {
     std::FILE *file_;
 };
 
+// Open for read only.  
 int OpenReadOrThrow(const char *name);
+// Create file if it doesn't exist, truncate if it does.  Opened for write.   
+int CreateOrThrow(const char *name);
 
 // Return value for SizeFile when it can't size properly.  
 const uint64_t kBadSize = (uint64_t)-1;
diff --git a/klm/util/mmap.cc b/klm/util/mmap.cc
index a329ce4e..3b1c58b8 100644
--- a/klm/util/mmap.cc
+++ b/klm/util/mmap.cc
@@ -170,20 +170,6 @@ void *MapZeroedWrite(int fd, std::size_t size) {
   return MapOrThrow(size, true, kFileFlags, false, fd, 0);
 }
 
-namespace {
-
-int CreateOrThrow(const char *name) {
-  int ret;
-#if defined(_WIN32) || defined(_WIN64)
-  UTIL_THROW_IF(-1 == (ret = _open(name, _O_CREAT | _O_TRUNC | _O_RDWR, _S_IREAD | _S_IWRITE)), ErrnoException, "while creating " << name);
-#else
-  UTIL_THROW_IF(-1 == (ret = open(name, O_CREAT | O_TRUNC | O_RDWR, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)), ErrnoException, "while creating " << name);
-#endif
-  return ret;
-}
-
-} // namespace
-
 void *MapZeroedWrite(const char *name, std::size_t size, scoped_fd &file) {
   file.reset(CreateOrThrow(name));
   try {
-- 
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