~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/tools/perf/util/color.c

Version: ~ [ linux-5.8-rc4 ] ~ [ linux-5.7.7 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.50 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.131 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.187 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.229 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.229 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 #include <linux/kernel.h>
  2 #include "cache.h"
  3 #include "color.h"
  4 #include <math.h>
  5 
  6 int perf_use_color_default = -1;
  7 
  8 int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty)
  9 {
 10         if (value) {
 11                 if (!strcasecmp(value, "never"))
 12                         return 0;
 13                 if (!strcasecmp(value, "always"))
 14                         return 1;
 15                 if (!strcasecmp(value, "auto"))
 16                         goto auto_color;
 17         }
 18 
 19         /* Missing or explicit false to turn off colorization */
 20         if (!perf_config_bool(var, value))
 21                 return 0;
 22 
 23         /* any normal truth value defaults to 'auto' */
 24  auto_color:
 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"))
 30                         return 1;
 31         }
 32         return 0;
 33 }
 34 
 35 int perf_color_default_config(const char *var, const char *value, void *cb)
 36 {
 37         if (!strcmp(var, "color.ui")) {
 38                 perf_use_color_default = perf_config_colorbool(var, value, -1);
 39                 return 0;
 40         }
 41 
 42         return perf_default_config(var, value, cb);
 43 }
 44 
 45 static int __color_vsnprintf(char *bf, size_t size, const char *color,
 46                              const char *fmt, va_list args, const char *trail)
 47 {
 48         int r = 0;
 49 
 50         /*
 51          * Auto-detect:
 52          */
 53         if (perf_use_color_default < 0) {
 54                 if (isatty(1) || pager_in_use())
 55                         perf_use_color_default = 1;
 56                 else
 57                         perf_use_color_default = 0;
 58         }
 59 
 60         if (perf_use_color_default && *color)
 61                 r += scnprintf(bf, size, "%s", color);
 62         r += vscnprintf(bf + r, size - r, fmt, args);
 63         if (perf_use_color_default && *color)
 64                 r += scnprintf(bf + r, size - r, "%s", PERF_COLOR_RESET);
 65         if (trail)
 66                 r += scnprintf(bf + r, size - r, "%s", trail);
 67         return r;
 68 }
 69 
 70 /* Colors are not included in return value */
 71 static int __color_vfprintf(FILE *fp, const char *color, const char *fmt,
 72                 va_list args)
 73 {
 74         int r = 0;
 75 
 76         /*
 77          * Auto-detect:
 78          */
 79         if (perf_use_color_default < 0) {
 80                 if (isatty(fileno(fp)) || pager_in_use())
 81                         perf_use_color_default = 1;
 82                 else
 83                         perf_use_color_default = 0;
 84         }
 85 
 86         if (perf_use_color_default && *color)
 87                 fprintf(fp, "%s", color);
 88         r += vfprintf(fp, fmt, args);
 89         if (perf_use_color_default && *color)
 90                 fprintf(fp, "%s", PERF_COLOR_RESET);
 91         return r;
 92 }
 93 
 94 int color_vsnprintf(char *bf, size_t size, const char *color,
 95                     const char *fmt, va_list args)
 96 {
 97         return __color_vsnprintf(bf, size, color, fmt, args, NULL);
 98 }
 99 
100 int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args)
101 {
102         return __color_vfprintf(fp, color, fmt, args);
103 }
104 
105 int color_snprintf(char *bf, size_t size, const char *color,
106                    const char *fmt, ...)
107 {
108         va_list args;
109         int r;
110 
111         va_start(args, fmt);
112         r = color_vsnprintf(bf, size, color, fmt, args);
113         va_end(args);
114         return r;
115 }
116 
117 int color_fprintf(FILE *fp, const char *color, const char *fmt, ...)
118 {
119         va_list args;
120         int r;
121 
122         va_start(args, fmt);
123         r = color_vfprintf(fp, color, fmt, args);
124         va_end(args);
125         return r;
126 }
127 
128 /*
129  * This function splits the buffer by newlines and colors the lines individually.
130  *
131  * Returns 0 on success.
132  */
133 int color_fwrite_lines(FILE *fp, const char *color,
134                 size_t count, const char *buf)
135 {
136         if (!*color)
137                 return fwrite(buf, count, 1, fp) != 1;
138 
139         while (count) {
140                 char *p = memchr(buf, '\n', count);
141 
142                 if (p != buf && (fputs(color, fp) < 0 ||
143                                 fwrite(buf, p ? (size_t)(p - buf) : count, 1, fp) != 1 ||
144                                 fputs(PERF_COLOR_RESET, fp) < 0))
145                         return -1;
146                 if (!p)
147                         return 0;
148                 if (fputc('\n', fp) < 0)
149                         return -1;
150                 count -= p + 1 - buf;
151                 buf = p + 1;
152         }
153         return 0;
154 }
155 
156 const char *get_percent_color(double percent)
157 {
158         const char *color = PERF_COLOR_NORMAL;
159 
160         /*
161          * We color high-overhead entries in red, mid-overhead
162          * entries in green - and keep the low overhead places
163          * normal:
164          */
165         if (fabs(percent) >= MIN_RED)
166                 color = PERF_COLOR_RED;
167         else {
168                 if (fabs(percent) > MIN_GREEN)
169                         color = PERF_COLOR_GREEN;
170         }
171         return color;
172 }
173 
174 int percent_color_fprintf(FILE *fp, const char *fmt, double percent)
175 {
176         int r;
177         const char *color;
178 
179         color = get_percent_color(percent);
180         r = color_fprintf(fp, color, fmt, percent);
181 
182         return r;
183 }
184 
185 int value_color_snprintf(char *bf, size_t size, const char *fmt, double value)
186 {
187         const char *color = get_percent_color(value);
188         return color_snprintf(bf, size, color, fmt, value);
189 }
190 
191 int percent_color_snprintf(char *bf, size_t size, const char *fmt, ...)
192 {
193         va_list args;
194         double percent;
195 
196         va_start(args, fmt);
197         percent = va_arg(args, double);
198         va_end(args);
199         return value_color_snprintf(bf, size, fmt, percent);
200 }
201 
202 int percent_color_len_snprintf(char *bf, size_t size, const char *fmt, ...)
203 {
204         va_list args;
205         int len;
206         double percent;
207         const char *color;
208 
209         va_start(args, fmt);
210         len = va_arg(args, int);
211         percent = va_arg(args, double);
212         va_end(args);
213 
214         color = get_percent_color(percent);
215         return color_snprintf(bf, size, color, fmt, len, percent);
216 }
217 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp