diff options
Diffstat (limited to 'ncurses-5.9/test/rain.c')
| -rw-r--r-- | ncurses-5.9/test/rain.c | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/ncurses-5.9/test/rain.c b/ncurses-5.9/test/rain.c new file mode 100644 index 0000000..97ad673 --- /dev/null +++ b/ncurses-5.9/test/rain.c @@ -0,0 +1,390 @@ +/**************************************************************************** + * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ +/* + * $Id$ + */ +#include <test.priv.h> + +/* rain 11/3/1980 EPS/CITHEP */ + +#ifdef USE_PTHREADS +#include <pthread.h> +#endif + +WANT_USE_WINDOW(); + +#define MAX_THREADS 10 +#define MAX_DROP 5 + +struct DATA; + +typedef void (*DrawPart) (struct DATA *); + +typedef struct DATA { + int y, x; +#ifdef USE_PTHREADS + DrawPart func; + int state; +#endif +} DATA; + +#ifdef USE_PTHREADS +pthread_cond_t cond_next_drop; +pthread_mutex_t mutex_next_drop; +static int used_threads; + +typedef struct { + pthread_t myself; + long counter; +} STATS; + +static STATS drop_threads[MAX_THREADS]; +#endif + +static void +onsig(int n GCC_UNUSED) +{ + curs_set(1); + endwin(); + ExitProgram(EXIT_FAILURE); +} + +static double +ranf(void) +{ + long r = (rand() & 077777); + return ((double) r / 32768.); +} + +static int +random_x(void) +{ + return (int) (((double) (COLS - 4) * ranf()) + 2); +} + +static int +random_y(void) +{ + return (int) (((double) (LINES - 4) * ranf()) + 2); +} + +static int +next_j(int j) +{ + if (j == 0) + j = MAX_DROP - 1; + else + --j; + if (has_colors()) { + int z = (int) (3 * ranf()); + chtype color = (chtype) COLOR_PAIR(z); + if (z) + color |= A_BOLD; + (void) attrset(color); + } + return j; +} + +static void +part1(DATA * drop) +{ + MvAddCh(drop->y, drop->x, '.'); +} + +static void +part2(DATA * drop) +{ + MvAddCh(drop->y, drop->x, 'o'); +} + +static void +part3(DATA * drop) +{ + MvAddCh(drop->y, drop->x, 'O'); +} + +static void +part4(DATA * drop) +{ + MvAddCh(drop->y - 1, drop->x, '-'); + MvAddStr(drop->y, drop->x - 1, "|.|"); + MvAddCh(drop->y + 1, drop->x, '-'); +} + +static void +part5(DATA * drop) +{ + MvAddCh(drop->y - 2, drop->x, '-'); + MvAddStr(drop->y - 1, drop->x - 1, "/ \\"); + MvAddStr(drop->y, drop->x - 2, "| O |"); + MvAddStr(drop->y + 1, drop->x - 1, "\\ /"); + MvAddCh(drop->y + 2, drop->x, '-'); +} + +static void +part6(DATA * drop) +{ + MvAddCh(drop->y - 2, drop->x, ' '); + MvAddStr(drop->y - 1, drop->x - 1, " "); + MvAddStr(drop->y, drop->x - 2, " "); + MvAddStr(drop->y + 1, drop->x - 1, " "); + MvAddCh(drop->y + 2, drop->x, ' '); +} + +#ifdef USE_PTHREADS +static void +napsome(void) +{ + napms(60); +} + +/* + * This runs inside the use_window() mutex. + */ +static int +really_draw(WINDOW *win, void *arg) +{ + DATA *data = (DATA *) arg; + + (void) win; + next_j(data->state); + data->func(data); + refresh(); + return OK; +} + +static void +draw_part(void (*func) (DATA *), int state, DATA * data) +{ + data->func = func; + data->state = state; + use_window(stdscr, really_draw, (void *) data); + napsome(); +} + +/* + * Tell the threads that one of them can start work on a new raindrop. + * They may all be busy if we're sending requests too rapidly. + */ +static int +put_next_drop(void) +{ + pthread_cond_signal(&cond_next_drop); + pthread_mutex_unlock(&mutex_next_drop); + + return 0; +} + +/* + * Wait until we're assigned the task of drawing a new raindrop. + */ +static int +get_next_drop(void) +{ + pthread_mutex_lock(&mutex_next_drop); + pthread_cond_wait(&cond_next_drop, &mutex_next_drop); + + return TRUE; +} + +static void * +draw_drop(void *arg) +{ + DATA mydata; + int mystats; + + /* + * Find myself in the list of threads so we can count the number of loops. + */ + for (mystats = 0; mystats < MAX_THREADS; ++mystats) { +#ifdef __MINGW32__ + if (drop_threads[mystats].myself.p == pthread_self().p) +#else + if (drop_threads[mystats].myself == pthread_self()) +#endif + break; + } + + do { + if (mystats < MAX_THREADS) + drop_threads[mystats].counter++; + + /* + * Make a copy of caller's data. We're cheating for the cases after + * the first loop since we still have a pointer into the main thread + * to the data which it uses for setting up this thread (but it has + * been modified to use different coordinates). + */ + mydata = *(DATA *) arg; + + draw_part(part1, 0, &mydata); + draw_part(part2, 1, &mydata); + draw_part(part3, 2, &mydata); + draw_part(part4, 3, &mydata); + draw_part(part5, 4, &mydata); + draw_part(part6, 0, &mydata); + } while (get_next_drop()); + + return NULL; +} + +/* + * The description of pthread_create() is misleading, since it implies that + * threads will exit cleanly after their function returns. + * + * Since they do not (and the number of threads is limited by system + * resources), make a limited number of threads, and signal any that are + * waiting when we want a thread past that limit. + */ +static int +start_drop(DATA * data) +{ + int rc; + + if (!used_threads) { + /* mutex and condition for signalling thread */ + pthread_mutex_init(&mutex_next_drop, NULL); + pthread_cond_init(&cond_next_drop, NULL); + } + + if (used_threads < MAX_THREADS) { + rc = pthread_create(&(drop_threads[used_threads].myself), + NULL, + draw_drop, + data); + ++used_threads; + } else { + rc = put_next_drop(); + } + return rc; +} +#endif + +static int +get_input(void) +{ + return USING_WINDOW(stdscr, wgetch); +} + +int +main(int argc GCC_UNUSED, + char *argv[]GCC_UNUSED) +{ + bool done = FALSE; + DATA drop; +#ifndef USE_PTHREADS + DATA last[MAX_DROP]; +#endif + int j = 0; + + setlocale(LC_ALL, ""); + + CATCHALL(onsig); + + initscr(); + if (has_colors()) { + int bg = COLOR_BLACK; + start_color(); +#if HAVE_USE_DEFAULT_COLORS + if (use_default_colors() == OK) + bg = -1; +#endif + init_pair(1, COLOR_BLUE, (short) bg); + init_pair(2, COLOR_CYAN, (short) bg); + } + nl(); + noecho(); + curs_set(0); + timeout(0); + +#ifndef USE_PTHREADS + for (j = MAX_DROP; --j >= 0;) { + last[j].x = random_x(); + last[j].y = random_y(); + } + j = 0; +#endif + + while (!done) { + drop.x = random_x(); + drop.y = random_y(); + +#ifdef USE_PTHREADS + if (start_drop(&drop) != 0) { + beep(); + } +#else + /* + * The non-threaded code draws parts of each drop on each loop. + */ + part1(&drop); + + part2(&last[j]); + + j = next_j(j); + part3(&last[j]); + + j = next_j(j); + part4(&last[j]); + + j = next_j(j); + part5(&last[j]); + + j = next_j(j); + part6(&last[j]); + + last[j] = drop; +#endif + + switch (get_input()) { + case ('q'): + case ('Q'): + done = TRUE; + break; + case 's': + nodelay(stdscr, FALSE); + break; + case ' ': + nodelay(stdscr, TRUE); + break; +#ifdef KEY_RESIZE + case (KEY_RESIZE): + break; +#endif + } + napms(50); + } + curs_set(1); + endwin(); +#ifdef USE_PTHREADS + printf("Counts per thread:\n"); + for (j = 0; j < MAX_THREADS; ++j) + printf(" %d:%ld\n", j, drop_threads[j].counter); +#endif + ExitProgram(EXIT_SUCCESS); +} |