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-rw-r--r--klm/util/pool.cc36
1 files changed, 36 insertions, 0 deletions
diff --git a/klm/util/pool.cc b/klm/util/pool.cc
new file mode 100644
index 00000000..429ba158
--- /dev/null
+++ b/klm/util/pool.cc
@@ -0,0 +1,36 @@
+#include "util/pool.hh"
+
+#include "util/scoped.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*>(MallocOrThrow(amount));
+ free_list_.push_back(ret);
+ current_ = ret + size;
+ current_end_ = ret + amount;
+ return ret;
+}
+
+} // namespace util