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Using shared memory to send data via nxt_port.

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Usage:
    b = nxt_port_mmap_get_buf(task, port, size);
    b->mem.free = nxt_cpymem(b->mem.free, data, size);
    nxt_port_socket_write(task, port, NXT_PORT_MSG_DATA, -1, 0, b);
This commit is contained in:
Max Romanov
2017-05-12 20:32:41 +03:00
parent 1782c771fa
commit f7b4bdfd89
19 changed files with 1506 additions and 186 deletions
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26
src/nxt_buf.h
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@@ -67,7 +67,7 @@ typedef struct {
struct nxt_buf_s {
void *data;
nxt_work_handler_t completion_handler;
nxt_buf_t *parent;
void *parent;
/*
* The next link, flags, and nxt_buf_mem_t should
@@ -85,11 +85,13 @@ struct nxt_buf_s {
uint8_t is_file; /* 1 bit */
uint16_t is_mmap:1;
uint16_t is_port_mmap:1;
uint16_t is_sync:1;
uint16_t is_nobuf:1;
uint16_t is_flush:1;
uint16_t is_last:1;
uint16_t is_port_mmap_sent:1;
nxt_buf_mem_t mem;
@@ -103,10 +105,11 @@ struct nxt_buf_s {
};
#define NXT_BUF_MEM_SIZE offsetof(nxt_buf_t, file)
#define NXT_BUF_SYNC_SIZE NXT_BUF_MEM_SIZE
#define NXT_BUF_MMAP_SIZE sizeof(nxt_buf_t)
#define NXT_BUF_FILE_SIZE sizeof(nxt_buf_t)
#define NXT_BUF_MEM_SIZE offsetof(nxt_buf_t, file)
#define NXT_BUF_SYNC_SIZE NXT_BUF_MEM_SIZE
#define NXT_BUF_FILE_SIZE sizeof(nxt_buf_t)
#define NXT_BUF_MMAP_SIZE NXT_BUF_FILE_SIZE
#define NXT_BUF_PORT_MMAP_SIZE NXT_BUF_MEM_SIZE
#define NXT_BUF_SYNC_NOBUF 1
@@ -145,6 +148,19 @@ nxt_buf_clear_mmap(b) \
(b)->is_mmap = 0
#define \
nxt_buf_is_port_mmap(b) \
((b)->is_port_mmap)
#define \
nxt_buf_set_port_mmap(b) \
(b)->is_port_mmap = 1
#define \
nxt_buf_clear_port_mmap(b) \
(b)->is_port_mmap = 0
#define \
nxt_buf_is_sync(b) \
((b)->is_sync)