generic-library/libzmq
1
0
Fork 0
mirror of https://github.com/zeromq/libzmq.git synced 2025-10-28 19:52:00 +01:00
Code Issues Projects Releases Wiki Activity

save some bytes in msg class

Browse Source
This commit is contained in:
somdoron
2016-01-28 11:25:26 +02:00
parent dc945998a4
commit 15ad6f8051
2 changed files with 52 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

63
src/msg.hpp
View File

@@ -34,6 +34,7 @@
#include <stdio.h>
#include "config.hpp"
#include "fd.hpp"
#include "atomic_counter.hpp"
#include "metadata.hpp"
@@ -86,8 +87,8 @@ namespace zmq
unsigned char flags ();
void set_flags (unsigned char flags_);
void reset_flags (unsigned char flags_);
int64_t fd ();
void set_fd (int64_t fd_);
fd_t fd ();
void set_fd (fd_t fd_);
metadata_t *metadata () const;
void set_metadata (metadata_t *metadata_);
void reset_metadata ();
@@ -112,7 +113,10 @@ namespace zmq
// Size in bytes of the largest message that is still copied around
// rather than being reference-counted.
enum { msg_t_size = 64 };
enum { max_vsm_size = msg_t_size - (8 + sizeof (metadata_t *) + 3 + sizeof(uint32_t)) };
enum { max_vsm_size = msg_t_size - (sizeof (metadata_t *) +
3 +
sizeof (uint32_t) +
sizeof (fd_t)) };
private:
zmq::atomic_counter_t* refcnt();
@@ -152,9 +156,6 @@ namespace zmq
type_max = 105
};
// the file descriptor where this message originated, needs to be 64bit due to alignment
int64_t file_desc;
// Note that fields shared between different message types are not
// moved to the parent class (msg_t). This way we get tighter packing
// of the data. Shared fields can be accessed via 'base' member of
@@ -162,10 +163,14 @@ namespace zmq
union {
struct {
metadata_t *metadata;
unsigned char unused [msg_t_size - (8 + sizeof (metadata_t *) + 2 + sizeof(uint32_t))];
unsigned char unused [msg_t_size - (sizeof (metadata_t *) +
2 +
sizeof (uint32_t) +
sizeof (fd_t))];
unsigned char type;
unsigned char flags;
uint32_t routing_id;
fd_t fd;
} base;
struct {
metadata_t *metadata;
@@ -174,17 +179,20 @@ namespace zmq
unsigned char type;
unsigned char flags;
uint32_t routing_id;
fd_t fd;
} vsm;
struct {
metadata_t *metadata;
content_t *content;
unsigned char unused [msg_t_size - (8 + sizeof (metadata_t *)
+ sizeof (content_t*)
+ 2
+ sizeof(uint32_t))];
unsigned char unused [msg_t_size - (sizeof (metadata_t *) +
sizeof (content_t*) +
2 +
sizeof (uint32_t) +
sizeof (fd_t))];
unsigned char type;
unsigned char flags;
uint32_t routing_id;
fd_t fd;
} lmsg;
struct {
metadata_t *metadata;
@@ -193,34 +201,45 @@ namespace zmq
msg_free_fn *ffn;
void *hint;
zmq::atomic_counter_t* refcnt;
unsigned char unused [msg_t_size - (8 + sizeof (metadata_t *)
+ sizeof (void*)
+ sizeof (size_t)
+ sizeof (msg_free_fn*)
+ sizeof (void*)
+ sizeof (zmq::atomic_counter_t*)
+ 2
+ sizeof(uint32_t))];
unsigned char unused [msg_t_size - (sizeof (metadata_t *) +
sizeof (void*) +
sizeof (size_t) +
sizeof (msg_free_fn*) +
sizeof (void*) +
sizeof (zmq::atomic_counter_t*) +
2 +
sizeof (uint32_t) +
sizeof (fd_t))];
unsigned char type;
unsigned char flags;
uint32_t routing_id;
fd_t fd;
} zclmsg;
struct {
metadata_t *metadata;
void* data;
size_t size;
unsigned char unused
[msg_t_size - (8 + sizeof (metadata_t *) + sizeof (void*) + sizeof (size_t) + 2 + sizeof(uint32_t))];
unsigned char unused [msg_t_size - (sizeof (metadata_t *) +
sizeof (void*) +
sizeof (size_t) +
2 +
sizeof (uint32_t) +
sizeof (fd_t))];
unsigned char type;
unsigned char flags;
uint32_t routing_id;
fd_t fd;
} cmsg;
struct {
metadata_t *metadata;
unsigned char unused [msg_t_size - (8 + sizeof (metadata_t *) + 2 + sizeof(uint32_t))];
unsigned char unused [msg_t_size - (sizeof (metadata_t *) +
2 +
sizeof (uint32_t) +
sizeof (fd_t))];
unsigned char type;
unsigned char flags;
uint32_t routing_id;
fd_t fd;
} delimiter;
} u;
};