1 #include <linux/kernel.h>
8 int perf_use_color_default = -1;
10 int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty)
13 if (!strcasecmp(value, "never"))
15 if (!strcasecmp(value, "always"))
17 if (!strcasecmp(value, "auto"))
21 /* Missing or explicit false to turn off colorization */
22 if (!perf_config_bool(var, value))
25 /* any normal truth value defaults to 'auto' */
27 if (stdout_is_tty < 0)
28 stdout_is_tty = isatty(1);
29 if (stdout_is_tty || pager_in_use()) {
30 char *term = getenv("TERM");
31 if (term && strcmp(term, "dumb"))
37 int perf_color_default_config(const char *var, const char *value,
38 void *cb __maybe_unused)
40 if (!strcmp(var, "color.ui")) {
41 perf_use_color_default = perf_config_colorbool(var, value, -1);
48 static int __color_vsnprintf(char *bf, size_t size, const char *color,
49 const char *fmt, va_list args, const char *trail)
56 if (perf_use_color_default < 0) {
57 if (isatty(1) || pager_in_use())
58 perf_use_color_default = 1;
60 perf_use_color_default = 0;
63 if (perf_use_color_default && *color)
64 r += scnprintf(bf, size, "%s", color);
65 r += vscnprintf(bf + r, size - r, fmt, args);
66 if (perf_use_color_default && *color)
67 r += scnprintf(bf + r, size - r, "%s", PERF_COLOR_RESET);
69 r += scnprintf(bf + r, size - r, "%s", trail);
73 /* Colors are not included in return value */
74 static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
82 if (perf_use_color_default < 0) {
83 if (isatty(fileno(fp)) || pager_in_use())
84 perf_use_color_default = 1;
86 perf_use_color_default = 0;
89 if (perf_use_color_default && *color)
90 fprintf(fp, "%s", color);
91 r += vfprintf(fp, fmt, args);
92 if (perf_use_color_default && *color)
93 fprintf(fp, "%s", PERF_COLOR_RESET);
97 int color_vsnprintf(char *bf, size_t size, const char *color,
98 const char *fmt, va_list args)
100 return __color_vsnprintf(bf, size, color, fmt, args, NULL);
103 int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
105 return __color_vfprintf(fp, color, fmt, args);
108 int color_snprintf(char *bf, size_t size, const char *color,
109 const char *fmt, ...)
115 r = color_vsnprintf(bf, size, color, fmt, args);
120 int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
126 r = color_vfprintf(fp, color, fmt, args);
132 * This function splits the buffer by newlines and colors the lines individually.
134 * Returns 0 on success.
136 int color_fwrite_lines(FILE *fp, const char *color,
137 size_t count, const char *buf)
140 return fwrite(buf, count, 1, fp) != 1;
143 char *p = memchr(buf, '\n', count);
145 if (p != buf && (fputs(color, fp) < 0 ||
146 fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
147 fputs(PERF_COLOR_RESET, fp) < 0))
151 if (fputc('\n', fp) < 0)
153 count -= p + 1 - buf;
159 const char *get_percent_color(double percent)
161 const char *color = PERF_COLOR_NORMAL;
164 * We color high-overhead entries in red, mid-overhead
165 * entries in green - and keep the low overhead places
168 if (fabs(percent) >= MIN_RED)
169 color = PERF_COLOR_RED;
171 if (fabs(percent) > MIN_GREEN)
172 color = PERF_COLOR_GREEN;
177 int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
182 color = get_percent_color(percent);
183 r = color_fprintf(fp, color, fmt, percent);
188 int value_color_snprintf(char *bf, size_t size, const char *fmt, double value)
190 const char *color = get_percent_color(value);
191 return color_snprintf(bf, size, color, fmt, value);
194 int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...)
200 percent = va_arg(args, double);
202 return value_color_snprintf(bf, size, fmt, percent);
205 int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...)
213 len = va_arg(args, int);
214 percent = va_arg(args, double);
217 color = get_percent_color(percent);
218 return color_snprintf(bf, size, color, fmt, len, percent);