static int ksyms__add_symbol()

in helpers/trace_helpers.c [47:86]

• 35 lines of code
• 8 McCabe index (conditional complexity)

static int ksyms__add_symbol(struct ksyms *ksyms, const char *name, unsigned long addr)
{
	size_t new_cap, name_len = strlen(name) + 1;
	struct ksym *ksym;
	void *tmp;

	if (ksyms->strs_sz + name_len > ksyms->strs_cap) {
		new_cap = ksyms->strs_cap * 4 / 3;
		if (new_cap < ksyms->strs_sz + name_len)
			new_cap = ksyms->strs_sz + name_len;
		if (new_cap < 1024)
			new_cap = 1024;
		tmp = realloc(ksyms->strs, new_cap);
		if (!tmp)
			return -1;
		ksyms->strs = tmp;
		ksyms->strs_cap = new_cap;
	}
	if (ksyms->syms_sz + 1 > ksyms->syms_cap) {
		new_cap = ksyms->syms_cap * 4 / 3;
		if (new_cap < 1024)
			new_cap = 1024;
		tmp = realloc(ksyms->syms, sizeof(*ksyms->syms) * new_cap);
		if (!tmp)
			return -1;
		ksyms->syms = tmp;
		ksyms->syms_cap = new_cap;
	}

	ksym = &ksyms->syms[ksyms->syms_sz];
	/* while constructing, re-use pointer as just a plain offset */
	ksym->name = (void *)(unsigned long)ksyms->strs_sz;
	ksym->addr = addr;

	memcpy(ksyms->strs + ksyms->strs_sz, name, name_len);
	ksyms->strs_sz += name_len;
	ksyms->syms_sz++;

	return 0;
}