From 82be8f211cbd50d2d75fe78d8af4a1da04a0582b Mon Sep 17 00:00:00 2001
From: Cedric Nugteren <web@cedricnugteren.nl>
Date: Wed, 27 Apr 2016 16:02:13 +0200
Subject: Moved all cache-related functions to a separate file; added a
 ClearCompiledProgramCache function to clear the cache

---
 src/cache.cc | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 src/cache.cc

(limited to 'src/cache.cc')

diff --git a/src/cache.cc b/src/cache.cc
new file mode 100644
index 00000000..beeb1b35
--- /dev/null
+++ b/src/cache.cc
@@ -0,0 +1,73 @@
+
+// =================================================================================================
+// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This
+// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max-
+// width of 100 characters per line.
+//
+// Author(s):
+//   Cedric Nugteren <www.cedricnugteren.nl>
+//
+// This file implements the caching functionality of compiled binaries.
+//
+// =================================================================================================
+
+#include <string>
+#include <vector>
+#include <mutex>
+
+#include "internal/cache.h"
+
+namespace clblast {
+namespace cache {
+// =================================================================================================
+
+// Stores the compiled program in the cache
+void StoreProgramToCache(const Program& program, const std::string &device_name,
+                         const Precision &precision, const std::string &routine_name) {
+  program_cache_mutex_.lock();
+  program_cache_.push_back({program, device_name, precision, routine_name});
+  program_cache_mutex_.unlock();
+}
+
+// Queries the cache and retrieves a matching program. Assumes that the match is available, throws
+// otherwise.
+const Program& GetProgramFromCache(const std::string &device_name, const Precision &precision,
+                                   const std::string &routine_name) {
+  program_cache_mutex_.lock();
+  for (auto &cached_program: program_cache_) {
+    if (cached_program.MatchInCache(device_name, precision, routine_name)) {
+      program_cache_mutex_.unlock();
+      return cached_program.program;
+    }
+  }
+  program_cache_mutex_.unlock();
+  throw std::runtime_error("Internal CLBlast error: Expected program in cache, but found none.");
+}
+
+// Queries the cache to see whether or not the compiled kernel is already there
+bool ProgramIsInCache(const std::string &device_name, const Precision &precision,
+                      const std::string &routine_name) {
+  program_cache_mutex_.lock();
+  for (auto &cached_program: program_cache_) {
+    if (cached_program.MatchInCache(device_name, precision, routine_name)) {
+      program_cache_mutex_.unlock();
+      return true;
+    }
+  }
+  program_cache_mutex_.unlock();
+  return false;
+}
+
+// =================================================================================================
+
+// Clears the cache of stored program binaries
+StatusCode ClearCompiledProgramCache() {
+  program_cache_mutex_.lock();
+  program_cache_.clear();
+  program_cache_mutex_.unlock();
+  return StatusCode::kSuccess;
+}
+
+// =================================================================================================
+} // namespace cache
+} // namespace clblast
-- 
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