1 #include <linux/kernel.h>
6 int perf_use_color_default = -1;
8 int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty)
11 if (!strcasecmp(value, "never"))
13 if (!strcasecmp(value, "always"))
15 if (!strcasecmp(value, "auto"))
19 /* Missing or explicit false to turn off colorization */
20 if (!perf_config_bool(var, value))
23 /* any normal truth value defaults to 'auto' */
25 if (stdout_is_tty < 0)
26 stdout_is_tty = isatty(1);
27 if (stdout_is_tty || pager_in_use()) {
28 char *term = getenv("TERM");
29 if (term && strcmp(term, "dumb"))
35 int perf_color_default_config(const char *var, const char *value,
36 void *cb __maybe_unused)
38 if (!strcmp(var, "color.ui")) {
39 perf_use_color_default = perf_config_colorbool(var, value, -1);
46 static int __color_vsnprintf(char *bf, size_t size, const char *color,
47 const char *fmt, va_list args, const char *trail)
54 if (perf_use_color_default < 0) {
55 if (isatty(1) || pager_in_use())
56 perf_use_color_default = 1;
58 perf_use_color_default = 0;
61 if (perf_use_color_default && *color)
62 r += scnprintf(bf, size, "%s", color);
63 r += vscnprintf(bf + r, size - r, fmt, args);
64 if (perf_use_color_default && *color)
65 r += scnprintf(bf + r, size - r, "%s", PERF_COLOR_RESET);
67 r += scnprintf(bf + r, size - r, "%s", trail);
71 /* Colors are not included in return value */
72 static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
80 if (perf_use_color_default < 0) {
81 if (isatty(fileno(fp)) || pager_in_use())
82 perf_use_color_default = 1;
84 perf_use_color_default = 0;
87 if (perf_use_color_default && *color)
88 fprintf(fp, "%s", color);
89 r += vfprintf(fp, fmt, args);
90 if (perf_use_color_default && *color)
91 fprintf(fp, "%s", PERF_COLOR_RESET);
95 int color_vsnprintf(char *bf, size_t size, const char *color,
96 const char *fmt, va_list args)
98 return __color_vsnprintf(bf, size, color, fmt, args, NULL);
101 int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
103 return __color_vfprintf(fp, color, fmt, args);
106 int color_snprintf(char *bf, size_t size, const char *color,
107 const char *fmt, ...)
113 r = color_vsnprintf(bf, size, color, fmt, args);
118 int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
124 r = color_vfprintf(fp, color, fmt, args);
130 * This function splits the buffer by newlines and colors the lines individually.
132 * Returns 0 on success.
134 int color_fwrite_lines(FILE *fp, const char *color,
135 size_t count, const char *buf)
138 return fwrite(buf, count, 1, fp) != 1;
141 char *p = memchr(buf, '\n', count);
143 if (p != buf && (fputs(color, fp) < 0 ||
144 fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
145 fputs(PERF_COLOR_RESET, fp) < 0))
149 if (fputc('\n', fp) < 0)
151 count -= p + 1 - buf;
157 const char *get_percent_color(double percent)
159 const char *color = PERF_COLOR_NORMAL;
162 * We color high-overhead entries in red, mid-overhead
163 * entries in green - and keep the low overhead places
166 if (fabs(percent) >= MIN_RED)
167 color = PERF_COLOR_RED;
169 if (fabs(percent) > MIN_GREEN)
170 color = PERF_COLOR_GREEN;
175 int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
180 color = get_percent_color(percent);
181 r = color_fprintf(fp, color, fmt, percent);
186 int value_color_snprintf(char *bf, size_t size, const char *fmt, double value)
188 const char *color = get_percent_color(value);
189 return color_snprintf(bf, size, color, fmt, value);
192 int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...)
198 percent = va_arg(args, double);
200 return value_color_snprintf(bf, size, fmt, percent);
203 int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...)
211 len = va_arg(args, int);
212 percent = va_arg(args, double);
215 color = get_percent_color(percent);
216 return color_snprintf(bf, size, color, fmt, len, percent);