sysutils/putty
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More general function to delete toplevel callbacks.

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For cases where you want a more subtle criterion than "cites this
particular context structure". I'm going to introduce one in the next
commit.
This commit is contained in:
Simon Tatham
2025-07-25 08:28:53 +01:00
parent edce58d49d
commit b7db18690b
2 changed files with 20 additions and 4 deletions
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21
callback.c
View File

@@ -41,7 +41,9 @@ void queue_idempotent_callback(struct IdempotentCallback *ic)
queue_toplevel_callback(run_idempotent_callback, ic);
}
void delete_callbacks_for_context(void *ctx)
void delete_callbacks(
bool (*delete_this_one)(void *predicate_ctx, toplevel_callback_fn_t fn,
void *callback_ctx), void *predicate_ctx)
{
struct callback *newhead, *newtail;
@@ -49,9 +51,7 @@ void delete_callbacks_for_context(void *ctx)
while (cbhead) {
struct callback *cb = cbhead;
cbhead = cbhead->next;
if (cb->ctx == ctx ||
(cb->fn == run_idempotent_callback &&
((struct IdempotentCallback *)cb->ctx)->ctx == ctx)) {
if (delete_this_one(predicate_ctx, cb->fn, cb->ctx)) {
sfree(cb);
} else {
if (!newhead)
@@ -69,6 +69,19 @@ void delete_callbacks_for_context(void *ctx)
newtail->next = NULL;
}
static bool callback_is_for_context(
void *predicate_ctx, toplevel_callback_fn_t fn, void *callback_ctx)
{
return callback_ctx == predicate_ctx ||
(fn == run_idempotent_callback &&
((struct IdempotentCallback *)callback_ctx)->ctx == predicate_ctx);
}
void delete_callbacks_for_context(void *ctx)
{
delete_callbacks(callback_is_for_context, ctx);
}
void queue_toplevel_callback(toplevel_callback_fn_t fn, void *ctx)
{
struct callback *cb;

3
putty.h
View File

@@ -2703,6 +2703,9 @@ unsigned long timing_last_clock(void);
void queue_toplevel_callback(toplevel_callback_fn_t fn, void *ctx);
bool run_toplevel_callbacks(void);
bool toplevel_callback_pending(void);
void delete_callbacks(
bool (*delete_this_one)(void *predicate_ctx, toplevel_callback_fn_t fn,
void *callback_ctx), void *predicate_ctx);
void delete_callbacks_for_context(void *ctx);
/*