X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;ds=sidebyside;f=lttng-context.c;h=869496d8ce0f222925afd2b4535ba15b2168ec87;hb=HEAD;hp=17d819d90121f7e0c7146361e115197939f6fce3;hpb=886d51a3d7ed5fa6b41d7f19b3e14ae6c535a44c;p=lttng-modules.git diff --git a/lttng-context.c b/lttng-context.c deleted file mode 100644 index 17d819d9..00000000 --- a/lttng-context.c +++ /dev/null @@ -1,105 +0,0 @@ -/* - * lttng-context.c - * - * LTTng trace/channel/event context management. - * - * Copyright (C) 2011-2012 Mathieu Desnoyers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; only - * version 2.1 of the License. - * - * This library 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include -#include -#include -#include -#include "wrapper/vmalloc.h" /* for wrapper_vmalloc_sync_all() */ -#include "lttng-events.h" -#include "lttng-tracer.h" - -int lttng_find_context(struct lttng_ctx *ctx, const char *name) -{ - unsigned int i; - - for (i = 0; i < ctx->nr_fields; i++) { - /* Skip allocated (but non-initialized) contexts */ - if (!ctx->fields[i].event_field.name) - continue; - if (!strcmp(ctx->fields[i].event_field.name, name)) - return 1; - } - return 0; -} -EXPORT_SYMBOL_GPL(lttng_find_context); - -/* - * Note: as we append context information, the pointer location may change. - */ -struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx_p) -{ - struct lttng_ctx_field *field; - struct lttng_ctx *ctx; - - if (!*ctx_p) { - *ctx_p = kzalloc(sizeof(struct lttng_ctx), GFP_KERNEL); - if (!*ctx_p) - return NULL; - } - ctx = *ctx_p; - if (ctx->nr_fields + 1 > ctx->allocated_fields) { - struct lttng_ctx_field *new_fields; - - ctx->allocated_fields = max_t(size_t, 1, 2 * ctx->allocated_fields); - new_fields = kzalloc(ctx->allocated_fields * sizeof(struct lttng_ctx_field), GFP_KERNEL); - if (!new_fields) - return NULL; - if (ctx->fields) - memcpy(new_fields, ctx->fields, sizeof(*ctx->fields) * ctx->nr_fields); - kfree(ctx->fields); - ctx->fields = new_fields; - } - field = &ctx->fields[ctx->nr_fields]; - ctx->nr_fields++; - return field; -} -EXPORT_SYMBOL_GPL(lttng_append_context); - -/* - * Remove last context field. - */ -void lttng_remove_context_field(struct lttng_ctx **ctx_p, - struct lttng_ctx_field *field) -{ - struct lttng_ctx *ctx; - - ctx = *ctx_p; - ctx->nr_fields--; - WARN_ON_ONCE(&ctx->fields[ctx->nr_fields] != field); - memset(&ctx->fields[ctx->nr_fields], 0, sizeof(struct lttng_ctx_field)); -} -EXPORT_SYMBOL_GPL(lttng_remove_context_field); - -void lttng_destroy_context(struct lttng_ctx *ctx) -{ - int i; - - if (!ctx) - return; - for (i = 0; i < ctx->nr_fields; i++) { - if (ctx->fields[i].destroy) - ctx->fields[i].destroy(&ctx->fields[i]); - } - kfree(ctx->fields); - kfree(ctx); -}