Mercurial > libjeffpc
view val_nvl.c @ 831:1475c8609196
synch: stash the condition variable name in the condition variable
This was supposed to be done during the great refactor in 2019.
Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
author | Josef 'Jeff' Sipek <jeffpc@josefsipek.net> |
---|---|
date | Mon, 22 Feb 2021 08:21:03 -0500 |
parents | 90cb00f83e5b |
children | 8ccd0c9ddaaa |
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/* * Copyright (c) 2018 Josef 'Jeff' Sipek <jeffpc@josefsipek.net> * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include <jeffpc/mem.h> #include "val_impl.h" static struct mem_cache *nvpair_cache; static void __attribute__((constructor)) init_val_subsys(void) { nvpair_cache = mem_cache_create("nvpair-cache", sizeof(struct nvpair), 0); ASSERT(!IS_ERR(nvpair_cache)); } struct nvpair *__nvpair_alloc(struct str *name) { struct nvpair *pair; pair = mem_cache_alloc(nvpair_cache); if (!pair) { str_putref(name); return NULL; } /* * Avoid returning with a NULL pointer. Of all the types, VT_NULL * is the least out of place. * * (We use VAL_ALLOC_NULL here to make it painfully clear that * ->value is valid later on, even though we could have used * val_alloc_null directly as it never fails.) */ pair->name = name; pair->value = VAL_ALLOC_NULL(); return pair; } void __nvpair_free(struct nvpair *pair) { str_putref(pair->name); val_putref(pair->value); mem_cache_free(nvpair_cache, pair); } static int val_nvl_cmp(const void *va, const void *vb) { const struct nvpair *a = va; const struct nvpair *b = vb; return str_cmp(a->name, b->name); } struct val *val_alloc_nvl(void) { struct val *val; val = __val_alloc(VT_NVL); if (IS_ERR(val)) return val; rb_create(&val->_set_nvl.values, val_nvl_cmp, sizeof(struct nvpair), offsetof(struct nvpair, node)); return val; } void __val_free_nvl(struct val *val) { struct rb_cookie cookie; struct nvpair *cur; ASSERT(val); ASSERT3U(refcnt_read(&val->refcnt), ==, 0); ASSERT3U(val->type, ==, VT_NVL); memset(&cookie, 0, sizeof(struct rb_cookie)); while ((cur = rb_destroy_nodes(&val->_set_nvl.values, &cookie))) __nvpair_free(cur); rb_destroy(&val->_set_nvl.values); }