// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>
#include "stacktrace_map.skel.h"

void test_stacktrace_map(void)
{
        struct stacktrace_map *skel;
        int control_map_fd, stackid_hmap_fd, stackmap_fd, stack_amap_fd;
        int err, stack_trace_len;
        __u32 key, val, stack_id, duration = 0;
        __u64 stack[PERF_MAX_STACK_DEPTH];

        skel = stacktrace_map__open_and_load();
        if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
                return;

        control_map_fd = bpf_map__fd(skel->maps.control_map);
        stackid_hmap_fd = bpf_map__fd(skel->maps.stackid_hmap);
        stackmap_fd = bpf_map__fd(skel->maps.stackmap);
        stack_amap_fd = bpf_map__fd(skel->maps.stack_amap);

        err = stacktrace_map__attach(skel);
        if (!ASSERT_OK(err, "skel_attach"))
                goto out;
        /* give some time for bpf program run */
        sleep(1);

        /* disable stack trace collection */
        key = 0;
        val = 1;
        bpf_map_update_elem(control_map_fd, &key, &val, 0);

        /* for every element in stackid_hmap, we can find a corresponding one
         * in stackmap, and vice versa.
         */
        err = compare_map_keys(stackid_hmap_fd, stackmap_fd);
        if (CHECK(err, "compare_map_keys stackid_hmap vs. stackmap",
                  "err %d errno %d\n", err, errno))
                goto out;

        err = compare_map_keys(stackmap_fd, stackid_hmap_fd);
        if (CHECK(err, "compare_map_keys stackmap vs. stackid_hmap",
                  "err %d errno %d\n", err, errno))
                goto out;

        stack_trace_len = PERF_MAX_STACK_DEPTH * sizeof(__u64);
        err = compare_stack_ips(stackmap_fd, stack_amap_fd, stack_trace_len);
        if (CHECK(err, "compare_stack_ips stackmap vs. stack_amap",
                  "err %d errno %d\n", err, errno))
                goto out;

        stack_id = skel->bss->stack_id;
        err = bpf_map_lookup_and_delete_elem(stackmap_fd, &stack_id,  stack);
        if (!ASSERT_OK(err, "lookup and delete target stack_id"))
                goto out;

        err = bpf_map_lookup_elem(stackmap_fd, &stack_id, stack);
        if (!ASSERT_EQ(err, -ENOENT, "lookup deleted stack_id"))
                goto out;
out:
        stacktrace_map__destroy(skel);
}