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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 11:19:16 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 12:07:37 +0000 |
commit | b485aab7e71c1625cfc27e0f92c9509f42378458 (patch) | |
tree | ae9abe108601079d1679194de237c9a435ae5b55 /web/server/h2o/libh2o/deps/mruby/src/backtrace.c | |
parent | Adding upstream version 1.44.3. (diff) | |
download | netdata-b485aab7e71c1625cfc27e0f92c9509f42378458.tar.xz netdata-b485aab7e71c1625cfc27e0f92c9509f42378458.zip |
Adding upstream version 1.45.3+dfsg.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'web/server/h2o/libh2o/deps/mruby/src/backtrace.c')
-rw-r--r-- | web/server/h2o/libh2o/deps/mruby/src/backtrace.c | 281 |
1 files changed, 0 insertions, 281 deletions
diff --git a/web/server/h2o/libh2o/deps/mruby/src/backtrace.c b/web/server/h2o/libh2o/deps/mruby/src/backtrace.c deleted file mode 100644 index 3e4e1a438..000000000 --- a/web/server/h2o/libh2o/deps/mruby/src/backtrace.c +++ /dev/null @@ -1,281 +0,0 @@ -/* -** backtrace.c - -** -** See Copyright Notice in mruby.h -*/ - -#include <mruby.h> -#include <mruby/variable.h> -#include <mruby/proc.h> -#include <mruby/array.h> -#include <mruby/string.h> -#include <mruby/class.h> -#include <mruby/debug.h> -#include <mruby/error.h> -#include <mruby/numeric.h> -#include <mruby/data.h> - -struct backtrace_location { - int lineno; - const char *filename; - mrb_sym method_id; -}; - -typedef void (*each_backtrace_func)(mrb_state*, struct backtrace_location*, void*); - -static const mrb_data_type bt_type = { "Backtrace", mrb_free }; - -static void -each_backtrace(mrb_state *mrb, ptrdiff_t ciidx, mrb_code *pc0, each_backtrace_func func, void *data) -{ - ptrdiff_t i, j; - - if (ciidx >= mrb->c->ciend - mrb->c->cibase) - ciidx = 10; /* ciidx is broken... */ - - for (i=ciidx, j=0; i >= 0; i--,j++) { - struct backtrace_location loc; - mrb_callinfo *ci; - mrb_irep *irep; - mrb_code *pc; - - ci = &mrb->c->cibase[i]; - - if (!ci->proc) continue; - if (MRB_PROC_CFUNC_P(ci->proc)) continue; - - irep = ci->proc->body.irep; - if (!irep) continue; - - if (mrb->c->cibase[i].err) { - pc = mrb->c->cibase[i].err; - } - else if (i+1 <= ciidx) { - pc = mrb->c->cibase[i+1].pc - 1; - } - else { - pc = pc0; - } - loc.filename = mrb_debug_get_filename(irep, pc - irep->iseq); - loc.lineno = mrb_debug_get_line(irep, pc - irep->iseq); - - if (loc.lineno == -1) continue; - - if (!loc.filename) { - loc.filename = "(unknown)"; - } - - loc.method_id = ci->mid; - func(mrb, &loc, data); - } -} - -#ifndef MRB_DISABLE_STDIO - -static void -print_backtrace(mrb_state *mrb, mrb_value backtrace) -{ - int i, n; - FILE *stream = stderr; - - if (!mrb_array_p(backtrace)) return; - - n = RARRAY_LEN(backtrace) - 1; - if (n == 0) return; - - fprintf(stream, "trace:\n"); - for (i=0; i<n; i++) { - mrb_value entry = RARRAY_PTR(backtrace)[n-i-1]; - - if (mrb_string_p(entry)) { - fprintf(stream, "\t[%d] %.*s\n", i, (int)RSTRING_LEN(entry), RSTRING_PTR(entry)); - } - } -} - -static int -packed_bt_len(struct backtrace_location *bt, int n) -{ - int len = 0; - int i; - - for (i=0; i<n; i++) { - if (!bt[i].filename && !bt[i].lineno && !bt[i].method_id) - continue; - len++; - } - return len; -} - -static void -print_packed_backtrace(mrb_state *mrb, mrb_value packed) -{ - FILE *stream = stderr; - struct backtrace_location *bt; - int n, i; - int ai = mrb_gc_arena_save(mrb); - - bt = (struct backtrace_location*)mrb_data_check_get_ptr(mrb, packed, &bt_type); - if (bt == NULL) return; - n = (mrb_int)RDATA(packed)->flags; - - if (packed_bt_len(bt, n) == 0) return; - fprintf(stream, "trace:\n"); - for (i = 0; i<n; i++) { - struct backtrace_location *entry = &bt[n-i-1]; - if (entry->filename == NULL) continue; - fprintf(stream, "\t[%d] %s:%d", i, entry->filename, entry->lineno); - if (entry->method_id != 0) { - const char *method_name; - - method_name = mrb_sym2name(mrb, entry->method_id); - fprintf(stream, ":in %s", method_name); - mrb_gc_arena_restore(mrb, ai); - } - fprintf(stream, "\n"); - } -} - -/* mrb_print_backtrace - - function to retrieve backtrace information from the last exception. -*/ - -MRB_API void -mrb_print_backtrace(mrb_state *mrb) -{ - mrb_value backtrace; - - if (!mrb->exc) { - return; - } - - backtrace = mrb_obj_iv_get(mrb, mrb->exc, mrb_intern_lit(mrb, "backtrace")); - if (mrb_nil_p(backtrace)) return; - if (mrb_array_p(backtrace)) { - print_backtrace(mrb, backtrace); - } - else { - print_packed_backtrace(mrb, backtrace); - } -} -#else - -MRB_API void -mrb_print_backtrace(mrb_state *mrb) -{ -} - -#endif - -static void -count_backtrace_i(mrb_state *mrb, - struct backtrace_location *loc, - void *data) -{ - int *lenp = (int*)data; - - if (loc->filename == NULL) return; - (*lenp)++; -} - -static void -pack_backtrace_i(mrb_state *mrb, - struct backtrace_location *loc, - void *data) -{ - struct backtrace_location **pptr = (struct backtrace_location**)data; - struct backtrace_location *ptr = *pptr; - - if (loc->filename == NULL) return; - *ptr = *loc; - *pptr = ptr+1; -} - -static mrb_value -packed_backtrace(mrb_state *mrb) -{ - struct RData *backtrace; - ptrdiff_t ciidx = mrb->c->ci - mrb->c->cibase; - int len = 0; - int size; - void *ptr; - - each_backtrace(mrb, ciidx, mrb->c->ci->pc, count_backtrace_i, &len); - size = len * sizeof(struct backtrace_location); - ptr = mrb_malloc(mrb, size); - if (ptr) memset(ptr, 0, size); - backtrace = mrb_data_object_alloc(mrb, NULL, ptr, &bt_type); - backtrace->flags = (unsigned int)len; - each_backtrace(mrb, ciidx, mrb->c->ci->pc, pack_backtrace_i, &ptr); - return mrb_obj_value(backtrace); -} - -void -mrb_keep_backtrace(mrb_state *mrb, mrb_value exc) -{ - mrb_value backtrace; - int ai = mrb_gc_arena_save(mrb); - - backtrace = packed_backtrace(mrb); - mrb_iv_set(mrb, exc, mrb_intern_lit(mrb, "backtrace"), backtrace); - mrb_gc_arena_restore(mrb, ai); -} - -mrb_value -mrb_unpack_backtrace(mrb_state *mrb, mrb_value backtrace) -{ - struct backtrace_location *bt; - mrb_int n, i; - int ai; - - if (mrb_nil_p(backtrace)) { - empty_backtrace: - return mrb_ary_new_capa(mrb, 0); - } - if (mrb_array_p(backtrace)) return backtrace; - bt = (struct backtrace_location*)mrb_data_check_get_ptr(mrb, backtrace, &bt_type); - if (bt == NULL) goto empty_backtrace; - n = (mrb_int)RDATA(backtrace)->flags; - backtrace = mrb_ary_new_capa(mrb, n); - ai = mrb_gc_arena_save(mrb); - for (i = 0; i < n; i++) { - struct backtrace_location *entry = &bt[i]; - mrb_value btline; - - if (entry->filename == NULL) continue; - btline = mrb_format(mrb, "%S:%S", - mrb_str_new_cstr(mrb, entry->filename), - mrb_fixnum_value(entry->lineno)); - if (entry->method_id != 0) { - mrb_str_cat_lit(mrb, btline, ":in "); - mrb_str_cat_cstr(mrb, btline, mrb_sym2name(mrb, entry->method_id)); - } - mrb_ary_push(mrb, backtrace, btline); - mrb_gc_arena_restore(mrb, ai); - } - - return backtrace; -} - -MRB_API mrb_value -mrb_exc_backtrace(mrb_state *mrb, mrb_value exc) -{ - mrb_sym attr_name; - mrb_value backtrace; - - attr_name = mrb_intern_lit(mrb, "backtrace"); - backtrace = mrb_iv_get(mrb, exc, attr_name); - if (mrb_nil_p(backtrace) || mrb_array_p(backtrace)) { - return backtrace; - } - backtrace = mrb_unpack_backtrace(mrb, backtrace); - mrb_iv_set(mrb, exc, attr_name, backtrace); - return backtrace; -} - -MRB_API mrb_value -mrb_get_backtrace(mrb_state *mrb) -{ - return mrb_unpack_backtrace(mrb, packed_backtrace(mrb)); -} |