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/*
samba -- Unix SMB/CIFS implementation.
Copyright (C) 2001, 2002 by Martin Pool
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "librpc/gen_ndr/messaging.h"
/**
* @file tallocmsg.c
*
* Glue code between talloc profiling and the Samba messaging system.
**/
struct msg_pool_usage_state {
TALLOC_CTX *mem_ctx;
ssize_t len;
size_t buflen;
char *s;
};
static void msg_pool_usage_helper(const void *ptr, int depth, int max_depth, int is_ref, void *_s)
{
const char *name = talloc_get_name(ptr);
struct msg_pool_usage_state *state = (struct msg_pool_usage_state *)_s;
if (is_ref) {
sprintf_append(state->mem_ctx, &state->s, &state->len, &state->buflen,
"%*sreference to: %s\n", depth*4, "", name);
return;
}
if (depth == 0) {
sprintf_append(state->mem_ctx, &state->s, &state->len, &state->buflen,
"%stalloc report on '%s' (total %6lu bytes in %3lu blocks)\n",
(max_depth < 0 ? "full " :""), name,
(unsigned long)talloc_total_size(ptr),
(unsigned long)talloc_total_blocks(ptr));
return;
}
if (strcmp(name, "char") == 0) {
/*
* Print out the first 50 bytes of the string
*/
sprintf_append(state->mem_ctx, &state->s, &state->len,
&state->buflen,
"%*s%-30s contains %6lu bytes in %3lu blocks "
"(ref %d): %*s\n", depth*4, "",
name,
(unsigned long)talloc_total_size(ptr),
(unsigned long)talloc_total_blocks(ptr),
talloc_reference_count(ptr),
MIN(50, talloc_get_size(ptr)),
(char *)ptr);
return;
}
sprintf_append(state->mem_ctx, &state->s, &state->len, &state->buflen,
"%*s%-30s contains %6lu bytes in %3lu blocks (ref %d)\n",
depth*4, "",
name,
(unsigned long)talloc_total_size(ptr),
(unsigned long)talloc_total_blocks(ptr),
talloc_reference_count(ptr));
}
/**
* Respond to a POOL_USAGE message by sending back string form of memory
* usage stats.
**/
static void msg_pool_usage(struct messaging_context *msg_ctx,
void *private_data,
uint32_t msg_type,
struct server_id src,
DATA_BLOB *data)
{
struct msg_pool_usage_state state;
SMB_ASSERT(msg_type == MSG_REQ_POOL_USAGE);
DEBUG(2,("Got POOL_USAGE\n"));
state.mem_ctx = talloc_init("msg_pool_usage");
if (!state.mem_ctx) {
return;
}
state.len = 0;
state.buflen = 512;
state.s = NULL;
talloc_report_depth_cb(NULL, 0, -1, msg_pool_usage_helper, &state);
if (!state.s) {
talloc_destroy(state.mem_ctx);
return;
}
messaging_send_buf(msg_ctx, src, MSG_POOL_USAGE,
(uint8 *)state.s, strlen(state.s)+1);
talloc_destroy(state.mem_ctx);
}
/**
* Register handler for MSG_REQ_POOL_USAGE
**/
void register_msg_pool_usage(struct messaging_context *msg_ctx)
{
messaging_register(msg_ctx, NULL, MSG_REQ_POOL_USAGE, msg_pool_usage);
DEBUG(2, ("Registered MSG_REQ_POOL_USAGE\n"));
}
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