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Add functions to allocate and free command contexts rather than doing it

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all on the stack.
This commit is contained in:
Nicholas Marriott 2013-03-22 15:49:55 +00:00
parent 29613f2f31
commit d1e6ce2672
4 changed files with 51 additions and 42 deletions
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20
cmd-if-shell.c
View File

@ -47,7 +47,7 @@ const struct cmd_entry cmd_if_shell_entry = {
struct cmd_if_shell_data {
char *cmd_if;
char *cmd_else;
struct cmd_ctx ctx;
struct cmd_ctx *ctx;
};
enum cmd_retval
@ -63,12 +63,9 @@ cmd_if_shell_exec(struct cmd *self, struct cmd_ctx *ctx)
cdata->cmd_else = xstrdup(args->argv[2]);
else
cdata->cmd_else = NULL;
memcpy(&cdata->ctx, ctx, sizeof cdata->ctx);
if (ctx->cmdclient != NULL)
ctx->cmdclient->references++;
if (ctx->curclient != NULL)
ctx->curclient->references++;
cdata->ctx = ctx;
cmd_ref_ctx(ctx);
job_run(shellcmd, cmd_if_shell_callback, cmd_if_shell_free, cdata);
@ -79,7 +76,7 @@ void
cmd_if_shell_callback(struct job *job)
{
struct cmd_if_shell_data *cdata = job->data;
struct cmd_ctx *ctx = &cdata->ctx;
struct cmd_ctx *ctx = cdata->ctx;
struct cmd_list *cmdlist;
char *cause, *cmd;
@ -105,14 +102,11 @@ void
cmd_if_shell_free(void *data)
{
struct cmd_if_shell_data *cdata = data;
struct cmd_ctx *ctx = &cdata->ctx;
struct cmd_ctx *ctx = cdata->ctx;
if (ctx->cmdclient != NULL) {
ctx->cmdclient->references--;
if (ctx->cmdclient != NULL)
ctx->cmdclient->flags |= CLIENT_EXIT;
}
if (ctx->curclient != NULL)
ctx->curclient->references--;
cmd_free_ctx(ctx);
free(cdata->cmd_else);
free(cdata->cmd_if);

5
cmd-list.c
View File

@ -97,7 +97,7 @@ cmd_list_exec(struct cmd_list *cmdlist, struct cmd_ctx *ctx)
TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
if (guards)
ctx->print(ctx, "%%begin");
n = cmd_exec(cmd, ctx);
n = cmd->entry->exec(cmd, ctx);
if (guards)
ctx->print(ctx, "%%end");
@ -146,7 +146,8 @@ cmd_list_free(struct cmd_list *cmdlist)
while (!TAILQ_EMPTY(&cmdlist->list)) {
cmd = TAILQ_FIRST(&cmdlist->list);
TAILQ_REMOVE(&cmdlist->list, cmd, qentry);
cmd_free(cmd);
args_free(cmd->args);
free(cmd);
}
free(cmdlist);
}

22
cmd-run-shell.c
View File

@ -47,7 +47,7 @@ const struct cmd_entry cmd_run_shell_entry = {
struct cmd_run_shell_data {
char *cmd;
struct cmd_ctx ctx;
struct cmd_ctx *ctx;
u_int wp_id;
};
@ -55,7 +55,7 @@ void
cmd_run_shell_print(struct job *job, const char *msg)
{
struct cmd_run_shell_data *cdata = job->data;
struct cmd_ctx *ctx = &cdata->ctx;
struct cmd_ctx *ctx = cdata->ctx;
struct window_pane *wp;
wp = window_pane_find_by_id(cdata->wp_id);
@ -84,12 +84,9 @@ cmd_run_shell_exec(struct cmd *self, struct cmd_ctx *ctx)
cdata = xmalloc(sizeof *cdata);
cdata->cmd = xstrdup(args->argv[0]);
cdata->wp_id = wp->id;
memcpy(&cdata->ctx, ctx, sizeof cdata->ctx);
if (ctx->cmdclient != NULL)
ctx->cmdclient->references++;
if (ctx->curclient != NULL)
ctx->curclient->references++;
cdata->ctx = ctx;
cmd_ref_ctx(ctx);
job_run(shellcmd, cmd_run_shell_callback, cmd_run_shell_free, cdata);
@ -100,7 +97,7 @@ void
cmd_run_shell_callback(struct job *job)
{
struct cmd_run_shell_data *cdata = job->data;
struct cmd_ctx *ctx = &cdata->ctx;
struct cmd_ctx *ctx = cdata->ctx;
char *cmd, *msg, *line;
size_t size;
int retcode;
@ -154,14 +151,11 @@ void
cmd_run_shell_free(void *data)
{
struct cmd_run_shell_data *cdata = data;
struct cmd_ctx *ctx = &cdata->ctx;
struct cmd_ctx *ctx = cdata->ctx;
if (ctx->cmdclient != NULL) {
ctx->cmdclient->references--;
if (ctx->cmdclient != NULL)
ctx->cmdclient->flags |= CLIENT_EXIT;
}
if (ctx->curclient != NULL)
ctx->curclient->references--;
cmd_free_ctx(ctx);
free(cdata->cmd);
free(cdata);

46
cmd.c
View File

@ -133,6 +133,39 @@ struct winlink *cmd_find_window_offset(const char *, struct session *, int *);
int cmd_find_index_offset(const char *, struct session *, int *);
struct window_pane *cmd_find_pane_offset(const char *, struct winlink *);
struct cmd_ctx *
cmd_get_ctx(void)
{
struct cmd_ctx *ctx;
ctx = xcalloc(1, sizeof *ctx);
ctx->references = 0;
cmd_ref_ctx(ctx);
return (ctx);
}
void
cmd_free_ctx(struct cmd_ctx *ctx)
{
if (ctx->cmdclient != NULL)
ctx->cmdclient->references--;
if (ctx->curclient != NULL)
ctx->curclient->references--;
if (--ctx->references == 0)
free(ctx);
}
void
cmd_ref_ctx(struct cmd_ctx *ctx)
{
ctx->references++;
if (ctx->cmdclient != NULL)
ctx->cmdclient->references++;
if (ctx->curclient != NULL)
ctx->curclient->references++;
}
int
cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
{
@ -282,19 +315,6 @@ usage:
return (NULL);
}
enum cmd_retval
cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
{
return (cmd->entry->exec(cmd, ctx));
}
void
cmd_free(struct cmd *cmd)
{
args_free(cmd->args);
free(cmd);
}
size_t
cmd_print(struct cmd *cmd, char *buf, size_t len)
{