diff options
Diffstat (limited to 'sysmon/src/main.cc')
| -rw-r--r-- | sysmon/src/main.cc | 361 |
1 files changed, 186 insertions, 175 deletions
diff --git a/sysmon/src/main.cc b/sysmon/src/main.cc index 78d8a57..7cc27ef 100644 --- a/sysmon/src/main.cc +++ b/sysmon/src/main.cc @@ -27,34 +27,29 @@ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -#include <stdio.h> -#include <stdlib.h> -#include <string.h> #include <ctype.h> #include <errno.h> #include <math.h> -#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> #include <sys/time.h> +#include <unistd.h> #include "winnie.h" -#define START_WIDTH 200 -#define START_HEIGHT 128 +#define START_WIDTH 200 +#define START_HEIGHT 128 -#define NUM_SAMPLES 64 +#define NUM_SAMPLES 64 -enum { - INFO_CPU, - INFO_MEM, - INFO_PROCS, - INFO_RUN_PROCS -}; +enum { INFO_CPU, INFO_MEM, INFO_PROCS, INFO_RUN_PROCS }; static struct information { - unsigned int mask; - float cpu_usage; - unsigned int cpu_count; - unsigned int procs, run_procs; + unsigned int mask; + float cpu_usage; + unsigned int cpu_count; + unsigned int procs, run_procs; } info; static double current_update_time, last_update_time; @@ -74,193 +69,209 @@ static void timer(Window *win); static void update_stat(void); static double get_time(void); -extern "C" bool init() +extern "C" bool +init() { - Window *win = new Window; - win->set_title("cpu usage"); - win->move(600, 50); - win->resize(START_WIDTH, START_HEIGHT); - win->set_display_callback(display); - win->set_keyboard_callback(keyboard); - win->set_mouse_button_callback(button); - win->set_mouse_motion_callback(motion); - win->set_timer_callback(timer); - - wm->add_window(win); - - bgimage = new Pixmap; - gen_bgimage(START_HEIGHT, START_HEIGHT); - - set_window_timer(win, 800, TIMER_REPEAT); - return true; + Window *win = new Window; + win->set_title("cpu usage"); + win->move(600, 50); + win->resize(START_WIDTH, START_HEIGHT); + win->set_display_callback(display); + win->set_keyboard_callback(keyboard); + win->set_mouse_button_callback(button); + win->set_mouse_motion_callback(motion); + win->set_timer_callback(timer); + + wm->add_window(win); + + bgimage = new Pixmap; + gen_bgimage(START_HEIGHT, START_HEIGHT); + + set_window_timer(win, 800, TIMER_REPEAT); + return true; } -extern "C" void cleanup() +extern "C" void +cleanup() { - delete bgimage; + delete bgimage; } -static void gen_bgimage(int xsz, int ysz) +static void +gen_bgimage(int xsz, int ysz) { - // allocate pixel buffer (or resize) - bgimage->set_image(xsz, ysz); - - unsigned char *ptr = bgimage->pixels; - for(int i=0; i<ysz; i++) { - int green = 255 * i / (ysz - 1); - int red = 255 - green; - - for(int j=0; j<xsz; j++) { - *ptr++ = red; - *ptr++ = green; - *ptr++ = 0; - *ptr++ = 255; - } - } + // allocate pixel buffer (or resize) + bgimage->set_image(xsz, ysz); + + unsigned char *ptr = bgimage->pixels; + for (int i = 0; i < ysz; i++) { + int green = 255 * i / (ysz - 1); + int red = 255 - green; + + for (int j = 0; j < xsz; j++) { + *ptr++ = red; + *ptr++ = green; + *ptr++ = 0; + *ptr++ = 255; + } + } } -static void display(Window *win) +static void +display(Window *win) { - Rect rect = win->get_absolute_rect(); - Pixmap *fb = get_framebuffer_pixmap(); - - int cpu_usage = (int)(info.cpu_usage * 100.0f); - - char title[64]; - sprintf(title, "cpu usage: %d%%", cpu_usage); - win->set_title(title); - - if(bgimage->width != rect.width || bgimage->height != rect.height) { - gen_bgimage(rect.width, rect.height); - } - - blit(bgimage->pixels, Rect(0, 0, bgimage->width, bgimage->height), - fb->pixels, get_screen_size(), rect.x, rect.y); - - float pix_per_sample = (float)rect.width / (float)(NUM_SAMPLES - 1); - int prev_x = 0; - int prev_y = rect.height - cpugraph[cpugraph_top] * rect.height; - - for(int i=1; i<NUM_SAMPLES; i++) { - int x = i * pix_per_sample; - if(x >= rect.width || i == NUM_SAMPLES - 1) { - x = rect.width - 1; - } - int y = rect.height - cpugraph[(cpugraph_top + i) % NUM_SAMPLES] * rect.height; - - /*int varr[] = { - prev_x, rect.height, - prev_x, prev_y, - x, y, - x, rect.height - };*/ - int varr[] = { - x, 0, - x, y, - prev_x, prev_y, - prev_x, 0 - }; - - for(int i=0; i<4; i++) { - varr[i * 2] += rect.x; - varr[i * 2 + 1] += rect.y; - } - - draw_polygon(fb, varr, 0, 4, 0, 0, 0); - - prev_x = x; - prev_y = y; - } + Rect rect = win->get_absolute_rect(); + Pixmap *fb = get_framebuffer_pixmap(); + + int cpu_usage = (int) (info.cpu_usage * 100.0f); + + char title[64]; + sprintf(title, "cpu usage: %d%%", cpu_usage); + win->set_title(title); + + if (bgimage->width != rect.width || bgimage->height != rect.height) { + gen_bgimage(rect.width, rect.height); + } + + blit(bgimage->pixels, + Rect(0, 0, bgimage->width, bgimage->height), + fb->pixels, + get_screen_size(), + rect.x, + rect.y); + + float pix_per_sample = (float) rect.width / (float) (NUM_SAMPLES - 1); + int prev_x = 0; + int prev_y = rect.height - cpugraph[cpugraph_top] * rect.height; + + for (int i = 1; i < NUM_SAMPLES; i++) { + int x = i * pix_per_sample; + if (x >= rect.width || i == NUM_SAMPLES - 1) { + x = rect.width - 1; + } + int y = rect.height + - cpugraph[(cpugraph_top + i) % NUM_SAMPLES] * rect.height; + + /*int varr[] = { + prev_x, rect.height, + prev_x, prev_y, + x, y, + x, rect.height + };*/ + int varr[] = { x, 0, x, y, prev_x, prev_y, prev_x, 0 }; + + for (int i = 0; i < 4; i++) { + varr[i * 2] += rect.x; + varr[i * 2 + 1] += rect.y; + } + + draw_polygon(fb, varr, 0, 4, 0, 0, 0); + + prev_x = x; + prev_y = y; + } } -static void keyboard(Window *win, int key, bool pressed) +static void +keyboard(Window *win, int key, bool pressed) { - printf("WINDOW(%p) keyboard %d %s\n", (void*)win, key, pressed ? "press" : "release"); + printf("WINDOW(%p) keyboard %d %s\n", + (void *) win, + key, + pressed ? "press" : "release"); } -static void button(Window *win, int bn, bool pressed, int x, int y) +static void +button(Window *win, int bn, bool pressed, int x, int y) { - printf("WINDOW(%p) button %d %s\n", (void*)win, bn, pressed ? "press" : "release"); + printf("WINDOW(%p) button %d %s\n", + (void *) win, + bn, + pressed ? "press" : "release"); } -static void motion(Window *win, int x, int y) +static void +motion(Window *win, int x, int y) { - printf("WINDOW(%p) motion %d %d\n", (void*)win, x, y); + printf("WINDOW(%p) motion %d %d\n", (void *) win, x, y); } -static void timer(Window *win) +static void +timer(Window *win) { - current_update_time = get_time(); - update_stat(); + current_update_time = get_time(); + update_stat(); - cpugraph[cpugraph_top] = info.cpu_usage; - cpugraph_top = (cpugraph_top + 1) % NUM_SAMPLES; + cpugraph[cpugraph_top] = info.cpu_usage; + cpugraph_top = (cpugraph_top + 1) % NUM_SAMPLES; - last_update_time = current_update_time; + last_update_time = current_update_time; - Rect dirty_rect = win->get_absolute_rect(); - dirty_rect.y -= 1; // to touch the frame too - wm->invalidate_region(dirty_rect); + Rect dirty_rect = win->get_absolute_rect(); + dirty_rect.y -= 1; // to touch the frame too + wm->invalidate_region(dirty_rect); } -static void update_stat(void) +static void +update_stat(void) { - static unsigned int cpu_user, cpu_system, cpu_nice; - static double last_cpu_sum; - static int clock_ticks; - - static int rep; - static FILE *stat_fp; - char buf[256]; - - if (stat_fp == NULL) { - if(!(stat_fp = fopen("/proc/stat", "r"))) { - if(!rep) { - fprintf(stderr, "failed to open /proc/stat: %s\n", strerror(errno)); - } - rep = 1; - } - } else { - fseek(stat_fp, 0, SEEK_SET); - } - if (stat_fp == NULL) return; - - info.cpu_count = 0; - - while (!feof(stat_fp)) { - if (fgets(buf, 255, stat_fp) == NULL) - break; - - if (strncmp(buf, "procs_running ", 14) == 0) { - sscanf(buf, "%*s %u", &info.run_procs); - info.mask |= (1 << INFO_RUN_PROCS); - } - else if (strncmp(buf, "cpu ", 4) == 0) { - sscanf(buf, "%*s %u %u %u", &cpu_user, &cpu_nice, &cpu_system); - info.mask |= (1 << INFO_CPU); - } - else if (strncmp(buf, "cpu", 3) == 0 && isdigit(buf[3])) { - info.cpu_count++; - } - } - - { - double delta; - delta = current_update_time - last_update_time; - if (delta <= 0.001) return; - - if (clock_ticks == 0) - clock_ticks = sysconf(_SC_CLK_TCK); - - info.cpu_usage = (cpu_user+cpu_nice+cpu_system - last_cpu_sum) / delta - / (double) clock_ticks / info.cpu_count; - last_cpu_sum = cpu_user+cpu_nice+cpu_system; - } + static unsigned int cpu_user, cpu_system, cpu_nice; + static double last_cpu_sum; + static int clock_ticks; + + static int rep; + static FILE *stat_fp; + char buf[256]; + + if (stat_fp == NULL) { + if (!(stat_fp = fopen("/proc/stat", "r"))) { + if (!rep) { + fprintf(stderr, "failed to open /proc/stat: %s\n", strerror(errno)); + } + rep = 1; + } + } else { + fseek(stat_fp, 0, SEEK_SET); + } + if (stat_fp == NULL) + return; + + info.cpu_count = 0; + + while (!feof(stat_fp)) { + if (fgets(buf, 255, stat_fp) == NULL) + break; + + if (strncmp(buf, "procs_running ", 14) == 0) { + sscanf(buf, "%*s %u", &info.run_procs); + info.mask |= (1 << INFO_RUN_PROCS); + } else if (strncmp(buf, "cpu ", 4) == 0) { + sscanf(buf, "%*s %u %u %u", &cpu_user, &cpu_nice, &cpu_system); + info.mask |= (1 << INFO_CPU); + } else if (strncmp(buf, "cpu", 3) == 0 && isdigit(buf[3])) { + info.cpu_count++; + } + } + + { + double delta; + delta = current_update_time - last_update_time; + if (delta <= 0.001) + return; + + if (clock_ticks == 0) + clock_ticks = sysconf(_SC_CLK_TCK); + + info.cpu_usage = (cpu_user + cpu_nice + cpu_system - last_cpu_sum) / delta + / (double) clock_ticks / info.cpu_count; + last_cpu_sum = cpu_user + cpu_nice + cpu_system; + } } -static double get_time(void) +static double +get_time(void) { - struct timeval tv; - gettimeofday(&tv, 0); - return tv.tv_sec + tv.tv_usec / 1000000.0; + struct timeval tv; + gettimeofday(&tv, 0); + return tv.tv_sec + tv.tv_usec / 1000000.0; } |