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992007ec78
"f(void)" is the correct and preferred form for a function taking no
argument, while some places use the older "f()". These were reported
by clang's -Wmissing-prototypes, for example:
src/cpuset.c:111:5: warning: no previous prototype for function 'ha_cpuset_size' [-Wmissing-prototypes]
int ha_cpuset_size()
include/haproxy/cpuset.h:42:5: note: this declaration is not a prototype; add 'void' to make it a prototype for a zero-parameter function
int ha_cpuset_size();
^
void
This aggregate patch fixes this for the following functions:
ha_backtrace_to_stderr(), ha_cpuset_size(), ha_panic(), ha_random64(),
ha_thread_dump_all_to_trash(), get_exec_path(), check_config_validity(),
mworker_child_nb(), mworker_cli_proxy_(create|stop)(),
mworker_cleantasks(), mworker_cleanlisteners(), mworker_ext_launch_all(),
mworker_reload(), mworker_(env|proc_list)_to_(proc_list|env)(),
mworker_(un|)block_signals(), proxy_adjust_all_maxconn(),
proxy_destroy_all_defaults(), get_tainted(),
pool_total_(allocated|used)(), thread_isolate(_full|)(),
thread(_sync|)_release(), thread_harmless_till_end(),
thread_cpu_mask_forced(), dequeue_all_listeners(), next_timer_expiry(),
wake_expired_tasks(), process_runnable_tasks(), init_acl(),
init_buffer(), (de|)init_log_buffers(), (de|)init_pollers(),
fork_poller(), pool_destroy_all(), pool_evict_from_local_caches(),
pool_total_failures(), dump_pools_to_trash(), cfg_run_diagnostics(),
tv_init_(process|thread)_date(), __signal_process_queue(),
deinit_signals(), haproxy_unblock_signals()
128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/*
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* include/haproxy/dynbuf.h
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* Buffer management functions.
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*
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* Copyright (C) 2000-2020 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _HAPROXY_DYNBUF_H
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#define _HAPROXY_DYNBUF_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <import/ist.h>
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#include <haproxy/activity.h>
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#include <haproxy/api.h>
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#include <haproxy/buf.h>
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#include <haproxy/chunk.h>
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#include <haproxy/dynbuf-t.h>
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#include <haproxy/pool.h>
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extern struct pool_head *pool_head_buffer;
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int init_buffer(void);
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void buffer_dump(FILE *o, struct buffer *b, int from, int to);
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/*****************************************************************/
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/* These functions are used to compute various buffer area sizes */
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/*****************************************************************/
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/* Return 1 if the buffer has less than 1/4 of its capacity free, otherwise 0 */
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static inline int buffer_almost_full(const struct buffer *buf)
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{
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if (b_is_null(buf))
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return 0;
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return b_almost_full(buf);
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}
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/**************************************************/
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/* Functions below are used for buffer allocation */
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/**************************************************/
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/* Ensures that <buf> is allocated, or allocates it. If no memory is available,
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* ((char *)1) is assigned instead with a zero size. The allocated buffer is
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* returned, or NULL in case no memory is available.
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*/
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static inline struct buffer *b_alloc(struct buffer *buf)
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{
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char *area;
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if (buf->size)
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return buf;
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*buf = BUF_WANTED;
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area = __pool_alloc(pool_head_buffer, POOL_F_NO_POISON);
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if (unlikely(!area)) {
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activity[tid].buf_wait++;
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return NULL;
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}
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buf->area = area;
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buf->size = pool_head_buffer->size;
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return buf;
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}
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/* Releases buffer <buf> (no check of emptiness). The buffer's head is marked
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* empty.
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*/
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static inline void __b_free(struct buffer *buf)
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{
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char *area = buf->area;
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/* let's first clear the area to save an occasional "show sess all"
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* glancing over our shoulder from getting a dangling pointer.
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*/
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*buf = BUF_NULL;
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__ha_barrier_store();
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pool_free(pool_head_buffer, area);
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}
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/* Releases buffer <buf> if allocated, and marks it empty. */
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static inline void b_free(struct buffer *buf)
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{
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if (buf->size)
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__b_free(buf);
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}
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/* Offer one or multiple buffer currently belonging to target <from> to whoever
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* needs one. Any pointer is valid for <from>, including NULL. Its purpose is
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* to avoid passing a buffer to oneself in case of failed allocations (e.g.
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* need two buffers, get one, fail, release it and wake up self again). In case
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* of normal buffer release where it is expected that the caller is not waiting
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* for a buffer, NULL is fine. It will wake waiters on the current thread only.
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*/
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void __offer_buffers(void *from, unsigned int count);
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static inline void offer_buffers(void *from, unsigned int count)
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{
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if (!LIST_ISEMPTY(&ti->buffer_wq))
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__offer_buffers(from, count);
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}
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#endif /* _HAPROXY_DYNBUF_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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