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lang/c/msgpack: C++ binding: enlarged chunk size of zone

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git-svn-id: file:///Users/frsyuki/project/msgpack-git/svn/x@58 5a5092ae-2292-43ba-b2d5-dcab9c1a2731
This commit is contained in:
frsyuki 2009-02-15 09:09:56 +00:00
parent 94cbe54cf3
commit 97bc0441b1
4 changed files with 26 additions and 17 deletions
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4
cpp/unpack.cpp
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@ -78,7 +78,7 @@ void unpacker::expand_buffer(size_t len)
if(m_off == 0) {
size_t next_size;
if(m_free != 0) { next_size = m_free * 2; }
else { next_size = MSGPACK_UNPACKER_INITIAL_BUFFER_SIZE; }
else { next_size = UNPACKER_INITIAL_BUFFER_SIZE; }
while(next_size < len + m_used) { next_size *= 2; }
// FIXME realloc?
@ -91,7 +91,7 @@ void unpacker::expand_buffer(size_t len)
m_free = next_size - m_used;
} else {
size_t next_size = MSGPACK_UNPACKER_INITIAL_BUFFER_SIZE;
size_t next_size = UNPACKER_INITIAL_BUFFER_SIZE;
while(next_size < len + m_used - m_off) { next_size *= 2; }
void* tmp = malloc(next_size);

3
cpp/unpack.hpp
View File

@ -12,6 +12,9 @@
namespace msgpack {
static const size_t UNPACKER_INITIAL_BUFFER_SIZE = MSGPACK_UNPACKER_INITIAL_BUFFER_SIZE;
struct unpack_error : public std::runtime_error {
unpack_error(const std::string& msg) :
std::runtime_error(msg) { }

25
cpp/zone.cpp
View File

@ -5,10 +5,17 @@ namespace msgpack {
void* zone::alloc()
{
if(m_used >= m_pool.size()*MSGPACK_ZONE_CHUNK_SIZE) {
m_pool.push_back(new chunk_t());
if(m_pool.size()*ZONE_CHUNK_SIZE <= m_used) {
cell_t* chunk = (cell_t*)malloc(sizeof(cell_t)*ZONE_CHUNK_SIZE);
if(!chunk) { throw std::bad_alloc(); }
try {
m_pool.push_back(chunk);
} catch (...) {
free(chunk);
throw;
}
}
void* data = m_pool[m_used/MSGPACK_ZONE_CHUNK_SIZE]->cells[m_used%MSGPACK_ZONE_CHUNK_SIZE].data;
void* data = m_pool[m_used/ZONE_CHUNK_SIZE][m_used%ZONE_CHUNK_SIZE].data;
++m_used;
return data;
}
@ -16,21 +23,21 @@ void* zone::alloc()
void zone::clear()
{
if(!m_pool.empty()) {
for(size_t b=0; b < m_used/MSGPACK_ZONE_CHUNK_SIZE; ++b) {
cell_t* c(m_pool[b]->cells);
for(size_t e=0; e < MSGPACK_ZONE_CHUNK_SIZE; ++e) {
for(size_t b=0; b < m_used/ZONE_CHUNK_SIZE; ++b) {
cell_t* c(m_pool[b]);
for(size_t e=0; e < ZONE_CHUNK_SIZE; ++e) {
reinterpret_cast<object_class*>(c[e].data)->~object_class();
}
}
cell_t* c(m_pool.back()->cells);
for(size_t e=0; e < m_used%MSGPACK_ZONE_CHUNK_SIZE; ++e) {
cell_t* c(m_pool.back());
for(size_t e=0; e < m_used%ZONE_CHUNK_SIZE; ++e) {
reinterpret_cast<object_class*>(c[e].data)->~object_class();
}
for(pool_t::iterator it(m_pool.begin()), it_end(m_pool.end());
it != it_end;
++it) {
delete *it;
free(*it);
}
m_pool.clear();
}

11
cpp/zone.hpp.erb
View File

@ -8,12 +8,15 @@
#include <stdexcept>
#ifndef MSGPACK_ZONE_CHUNK_SIZE
#define MSGPACK_ZONE_CHUNK_SIZE 64
#define MSGPACK_ZONE_CHUNK_SIZE 8*1024
#endif
namespace msgpack {
static const size_t ZONE_CHUNK_SIZE = MSGPACK_ZONE_CHUNK_SIZE;
class zone {
public:
zone() : m_used(0) { }
@ -110,11 +113,7 @@ private:
char data[MAX_OBJECT_SIZE];
};
struct chunk_t {
cell_t cells[MSGPACK_ZONE_CHUNK_SIZE];
};
typedef std::vector<chunk_t*> pool_t;
typedef std::vector<cell_t*> pool_t;
pool_t m_pool;