| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #include <string.h> | ||
| 2 | #include "trace.h" | ||
| 3 | #include "util/array.h" | ||
| 4 | #include "util/debug.h" | ||
| 5 | #include "util/str-util.h" | ||
| 6 | #include "util/xstring.h" | ||
| 7 | |||
| 8 | #if TRACE_LOGGING_ENABLED | ||
| 9 | |||
| 10 | // NOLINTNEXTLINE(*-avoid-non-const-global-variables) | ||
| 11 | static TraceLoggingFlags trace_flags = 0; | ||
| 12 | |||
| 13 | static const char trace_names[][8] = { | ||
| 14 | "command", | ||
| 15 | "input", | ||
| 16 | "output", | ||
| 17 | }; | ||
| 18 | |||
| 19 | // Example valid input: "command" | ||
| 20 | 286 | static TraceLoggingFlags trace_flags_from_single_str(const char *name) | |
| 21 | { | ||
| 22 |
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924 | for (size_t i = 0; i < ARRAYLEN(trace_names); i++) { |
| 23 |
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748 | if (streq(name, trace_names[i])) { |
| 24 | 110 | return 1u << i; | |
| 25 | } | ||
| 26 | } | ||
| 27 | |||
| 28 | 176 | LOG_WARNING("unrecognized trace flag: '%s'", name); | |
| 29 | 176 | return 0; | |
| 30 | } | ||
| 31 | |||
| 32 | // Example valid input: "command,status,input" | ||
| 33 | 154 | static TraceLoggingFlags trace_flags_from_str(const char *flag_str) | |
| 34 | { | ||
| 35 |
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154 | if (!flag_str || flag_str[0] == '\0') { |
| 36 | return 0; | ||
| 37 | } | ||
| 38 | |||
| 39 |
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132 | if (streq(flag_str, "all")) { |
| 40 | return TRACEFLAGS_ALL; | ||
| 41 | } | ||
| 42 | |||
| 43 | // Copy flag_str into a mutable buffer, so that get_delim_str() can be | ||
| 44 | // used to split (and null-terminate) the comma-delimited substrings | ||
| 45 | 132 | char buf[128]; | |
| 46 | 132 | const char *end = memccpy(buf, flag_str, '\0', sizeof(buf)); | |
| 47 |
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132 | if (!end) { |
| 48 | ✗ | LOG_ERROR("trace flags string too long"); | |
| 49 | ✗ | return 0; | |
| 50 | } | ||
| 51 | |||
| 52 | 132 | BUG_ON(end <= buf); | |
| 53 | 132 | TraceLoggingFlags flags = 0; | |
| 54 | |||
| 55 |
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418 | for (size_t pos = 0, len = end - buf - 1; pos < len; ) { |
| 56 | 286 | const char *piece = get_delim_str(buf, &pos, len, ','); | |
| 57 | 286 | flags |= trace_flags_from_single_str(piece); | |
| 58 | } | ||
| 59 | |||
| 60 | 132 | return flags; | |
| 61 | } | ||
| 62 | |||
| 63 | 22 | UNITTEST { | |
| 64 | 22 | CHECK_STRING_ARRAY(trace_names); | |
| 65 | // NOLINTBEGIN(bugprone-assert-side-effect) | ||
| 66 | 22 | BUG_ON(trace_flags_from_str("output") != TRACEFLAG_OUTPUT); | |
| 67 | 22 | BUG_ON(trace_flags_from_str(",x,, ,output,,") != TRACEFLAG_OUTPUT); | |
| 68 | 22 | BUG_ON(trace_flags_from_str("command,input") != (TRACEFLAG_COMMAND | TRACEFLAG_INPUT)); | |
| 69 | 22 | BUG_ON(trace_flags_from_str("command,inpu") != TRACEFLAG_COMMAND); | |
| 70 | 22 | BUG_ON(trace_flags_from_str("") != 0); | |
| 71 | 22 | BUG_ON(trace_flags_from_str(",") != 0); | |
| 72 | 22 | BUG_ON(trace_flags_from_str("a") != 0); | |
| 73 | // NOLINTEND(bugprone-assert-side-effect) | ||
| 74 | 22 | } | |
| 75 | |||
| 76 | ✗ | bool set_trace_logging_flags(const char *flag_str) | |
| 77 | { | ||
| 78 | ✗ | if (!log_level_enabled(LOG_LEVEL_TRACE)) { | |
| 79 | return false; | ||
| 80 | } | ||
| 81 | |||
| 82 | ✗ | BUG_ON(trace_flags); // Should only be called once | |
| 83 | ✗ | trace_flags = trace_flags_from_str(flag_str); | |
| 84 | ✗ | return (trace_flags != 0); | |
| 85 | } | ||
| 86 | |||
| 87 | // Return true if *any* 1 bits in `flags` are enabled in `trace_flags` | ||
| 88 | 18 | bool log_trace_enabled(TraceLoggingFlags flags) | |
| 89 | { | ||
| 90 | 18 | return !!(trace_flags & flags); | |
| 91 | } | ||
| 92 | |||
| 93 | 18 | void log_trace(TraceLoggingFlags flags, const char *file, int line, const char *fmt, ...) | |
| 94 | { | ||
| 95 |
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18 | if (!log_trace_enabled(flags)) { |
| 96 | 18 | return; | |
| 97 | } | ||
| 98 | ✗ | va_list ap; | |
| 99 | ✗ | va_start(ap, fmt); | |
| 100 | ✗ | log_msgv(LOG_LEVEL_TRACE, file, line, fmt, ap); | |
| 101 | ✗ | va_end(ap); | |
| 102 | } | ||
| 103 | |||
| 104 | #endif // TRACE_LOGGING_ENABLED | ||
| 105 |