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https://github.com/tmux/tmux.git
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db7a89b1ee
fire-and-forget. Status jobs now managed with two trees of output (new and old), rather than storing the output in the jobs themselves. When the status line is processed any jobs which don't appear in the new tree are started and the output from the old tree displayed. When a job finishes it updates the new tree with its output and that is used for any subsequent redraws. When the status interval expires, the new tree is moved to the old so that all jobs are run again. This fixes the "#(echo %H:%M:%S)" problem which would lead to thousands of identical persistent jobs and high memory use (this can still be achieved by adding "sleep 30" but that is much less likely to happen by accident).
142 lines
3.3 KiB
C
142 lines
3.3 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
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* Copyright (c) 2009 Nicholas Marriott <nicm@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <string.h>
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#include "tmux.h"
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/*
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* Runs a command without a window.
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*/
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int cmd_run_shell_exec(struct cmd *, struct cmd_ctx *);
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void cmd_run_shell_callback(struct job *);
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void cmd_run_shell_free(void *);
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const struct cmd_entry cmd_run_shell_entry = {
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"run-shell", "run",
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"", 1, 1,
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"command",
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0,
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NULL,
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NULL,
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cmd_run_shell_exec
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};
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struct cmd_run_shell_data {
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char *cmd;
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struct cmd_ctx ctx;
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};
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int
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cmd_run_shell_exec(struct cmd *self, struct cmd_ctx *ctx)
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{
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struct args *args = self->args;
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struct cmd_run_shell_data *cdata;
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const char *shellcmd = args->argv[0];
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cdata = xmalloc(sizeof *cdata);
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cdata->cmd = xstrdup(args->argv[0]);
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memcpy(&cdata->ctx, ctx, sizeof cdata->ctx);
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if (ctx->cmdclient != NULL)
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ctx->cmdclient->references++;
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if (ctx->curclient != NULL)
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ctx->curclient->references++;
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job_run(shellcmd, cmd_run_shell_callback, cmd_run_shell_free, cdata);
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return (1); /* don't let client exit */
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}
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void
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cmd_run_shell_callback(struct job *job)
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{
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struct cmd_run_shell_data *cdata = job->data;
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struct cmd_ctx *ctx = &cdata->ctx;
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char *cmd, *msg, *line;
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size_t size;
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int retcode;
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u_int lines;
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if (ctx->cmdclient != NULL && ctx->cmdclient->flags & CLIENT_DEAD)
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return;
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if (ctx->curclient != NULL && ctx->curclient->flags & CLIENT_DEAD)
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return;
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lines = 0;
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do {
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if ((line = evbuffer_readline(job->event->input)) != NULL) {
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ctx->print(ctx, "%s", line);
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lines++;
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}
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} while (line != NULL);
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size = EVBUFFER_LENGTH(job->event->input);
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if (size != 0) {
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line = xmalloc(size + 1);
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memcpy(line, EVBUFFER_DATA(job->event->input), size);
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line[size] = '\0';
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ctx->print(ctx, "%s", line);
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lines++;
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xfree(line);
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}
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cmd = cdata->cmd;
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msg = NULL;
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if (WIFEXITED(job->status)) {
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if ((retcode = WEXITSTATUS(job->status)) != 0)
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xasprintf(&msg, "'%s' returned %d", cmd, retcode);
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} else if (WIFSIGNALED(job->status)) {
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retcode = WTERMSIG(job->status);
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xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
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}
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if (msg != NULL) {
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if (lines != 0)
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ctx->print(ctx, "%s", msg);
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else
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ctx->info(ctx, "%s", msg);
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xfree(msg);
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}
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}
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void
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cmd_run_shell_free(void *data)
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{
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struct cmd_run_shell_data *cdata = data;
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struct cmd_ctx *ctx = &cdata->ctx;
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if (ctx->cmdclient != NULL) {
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ctx->cmdclient->references--;
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ctx->cmdclient->flags |= CLIENT_EXIT;
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}
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if (ctx->curclient != NULL)
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ctx->curclient->references--;
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xfree(cdata->cmd);
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xfree(cdata);
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}
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