137 lines
3.6 KiB
C
137 lines
3.6 KiB
C
/*
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* SPDX-License-Identifier: LicenseRef-CSSL-1.0
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*/
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#include "view.h"
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#include "../utils.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <pthread.h>
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#include <stdarg.h>
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#include <string.h>
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#include <math.h>
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struct scrolltti {
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view common;
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gui *g;
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widget *w;
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widget *throughput_textarea;
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int plot;
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float refresh_rate;
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pthread_mutex_t lock;
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int ticks_per_frame;
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unsigned long *data;
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unsigned long total; /* sum data[0..n] to have smoother value printed */
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float *xout;
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float *yout;
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int insert_point;
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int next_tick_frame;
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int next_tick_tick;
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};
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/* this array is used to get Y range 1000, 2000, 5000, 10000, ... */
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static int tolog[11] = { -1, 1, 2, 5, 5, 5, 10, 10, 10, 10, 10 };
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static void *scrolltti_thread(void *_this)
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{
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struct scrolltti *this = _this;
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int i;
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int p;
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float max, mlog;
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char o[64];
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while (1) {
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if (pthread_mutex_lock(&this->lock)) abort();
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/* TODO: optimize */
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p = this->insert_point;
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max = 0;
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for (i = 0; i < this->ticks_per_frame * 100; i++) {
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this->xout[i] = i;
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this->yout[i] = this->data[p];
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if (this->data[p] > max) max = this->data[p];
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p = (p + 1) % (this->ticks_per_frame * 100);
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}
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bps(o, this->total/(this->ticks_per_frame * 100.), "b/s");
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textarea_set_text(this->g, this->throughput_textarea, o);
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/* for Y range we want 1000, 2000, 5000, 10000, 20000, 50000, etc. */
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if (max < 1000) max = 1000;
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mlog = pow(10, floor(log10(max)));
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max = tolog[(int)ceil(max/mlog)] * mlog;
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xy_plot_set_range(this->g, this->w, 0, this->ticks_per_frame * 100, 0, max);
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xy_plot_set_points(this->g, this->w, this->plot,
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this->ticks_per_frame * 100, this->xout, this->yout);
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if (pthread_mutex_unlock(&this->lock)) abort();
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sleepms(1000/this->refresh_rate);
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}
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return 0;
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}
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static void clear(view *this)
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{
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/* TODO */
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UNUSED(this);
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}
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static void insert(struct scrolltti *this, double value)
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{
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this->total -= this->data[this->insert_point];
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this->data[this->insert_point] = value;
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this->total += this->data[this->insert_point];
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this->insert_point = (this->insert_point + 1) % (this->ticks_per_frame * 100);
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}
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static void next_tick(struct scrolltti *this)
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{
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this->next_tick_tick++;
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if (this->next_tick_tick == this->ticks_per_frame) {
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this->next_tick_tick = 0;
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this->next_tick_frame++;
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this->next_tick_frame %= 1024;
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}
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}
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static void append(view *_this, int frame, int tick, double value)
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{
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struct scrolltti *this = (struct scrolltti *)_this;
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if (pthread_mutex_lock(&this->lock)) abort();
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while (this->next_tick_frame != frame || this->next_tick_tick != tick) {
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insert(this, 0);
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next_tick(this);
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}
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insert(this, value);
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next_tick(this);
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if (pthread_mutex_unlock(&this->lock)) abort();
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}
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view *new_view_scrolltti(float refresh_rate, gui *g, widget *w, int color,
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widget *throughput_textarea, int ticks_per_frame)
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{
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struct scrolltti *ret = calloc(1, sizeof(struct scrolltti));
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if (ret == NULL) abort();
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ret->common.clear = clear;
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ret->common.append = (void (*)(view *, ...))append;
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ret->refresh_rate = refresh_rate;
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ret->g = g;
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ret->w = w;
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ret->throughput_textarea = throughput_textarea;
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ret->plot = xy_plot_new_plot(g, w, color);
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ret->ticks_per_frame = ticks_per_frame;
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ret->data = calloc(ticks_per_frame * 100, sizeof(unsigned long));
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if (ret->data == NULL) abort();
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ret->xout = calloc(ticks_per_frame * 100, sizeof(float));
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if (ret->xout == NULL) abort();
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ret->yout = calloc(ticks_per_frame * 100, sizeof(float));
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if (ret->yout == NULL) abort();
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if (pthread_mutex_init(&ret->lock, NULL)) abort();
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new_thread(scrolltti_thread, ret);
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return (view *)ret;
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}
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