merge upstream/master

1 files changed, 35 insertions, 0 deletions

diff --git a/klm/util/pool.cc b/klm/util/pool.cc
new file mode 100644
index 00000000..2dffd06f
--- /dev/null
+++ b/klm/util/pool.cc
@@ -0,0 +1,35 @@
+#include "util/pool.hh"
+
+#include <stdlib.h>
+
+namespace util {
+
+Pool::Pool() {
+  current_ = NULL;
+  current_end_ = NULL;
+}
+
+Pool::~Pool() {
+  FreeAll();
+}
+
+void Pool::FreeAll() {
+  for (std::vector<void *>::const_iterator i(free_list_.begin()); i != free_list_.end(); ++i) {
+    free(*i);
+  }
+  free_list_.clear();
+  current_ = NULL;
+  current_end_ = NULL;
+}
+
+void *Pool::More(std::size_t size) {
+  std::size_t amount = std::max(static_cast<size_t>(32) << free_list_.size(), size);
+  uint8_t *ret = static_cast<uint8_t*>(malloc(amount));
+  if (!ret) throw std::bad_alloc();
+  free_list_.push_back(ret);
+  current_ = ret + size;
+  current_end_ = ret + amount;
+  return ret;
+}
+
+} // namespace util