Mercurial > molko
changeset 375:d83b686dcf63
js: add Mlk.setTrace function
| author | David Demelier <markand@malikania.fr> |
|---|---|
| date | Tue, 02 Nov 2021 15:22:14 +0100 |
| parents | 76ecec33dc9b |
| children | b75fa5f47bf0 |
| files | src/libmlk-core-js/core/js-trace.c src/libmlk-core/core/trace.c src/libmlk-core/core/trace.h |
| diffstat | 3 files changed, 41 insertions(+), 0 deletions(-) [+] |
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--- a/src/libmlk-core-js/core/js-trace.c Mon Oct 25 21:17:30 2021 +0200 +++ b/src/libmlk-core-js/core/js-trace.c Tue Nov 02 15:22:14 2021 +0100 @@ -22,6 +22,27 @@ #include "js-trace.h" +#define TRACE_CB DUK_HIDDEN_SYMBOL("Mlk.traceHandler") + +static void +handler(const char *msg) +{ + duk_context *ctx = trace_data; + + duk_push_global_stash(ctx); + duk_get_prop_string(ctx, -1, TRACE_CB); + duk_remove(ctx, -2); + + if (duk_is_callable(ctx, -1)) { + duk_push_string(ctx, msg); + duk_call(ctx, 1); + duk_pop(ctx); + } else { + fprintf(stderr, "abort: javascript panic handler not callable\n"); + exit(1); + } +} + static duk_ret_t Mlk_trace(duk_context *ctx) { @@ -30,8 +51,26 @@ return 0; } +static duk_ret_t +Mlk_setTrace(duk_context *ctx) +{ + if (!duk_is_callable(ctx, 0)) + return duk_error(ctx, DUK_ERR_TYPE_ERROR, "handler not callable"); + + duk_push_global_stash(ctx); + duk_dup(ctx, 0); + duk_put_prop_string(ctx, -2, TRACE_CB); + duk_pop(ctx); + + trace_handler = handler; + trace_data = ctx; + + return 0; +} + static const duk_function_list_entry functions[] = { { "trace", Mlk_trace, 1 }, + { "setTrace", Mlk_setTrace, 1 }, { NULL, NULL, 0 } };