Moved example code examples folder

1 files changed, 0 insertions, 139 deletions

diff --git a/portmidi/porttime/ptlinux.c b/portmidi/porttime/ptlinux.c
deleted file mode 100755
index c4af5c1..0000000
--- a/portmidi/porttime/ptlinux.c
+++ /dev/null
@@ -1,139 +0,0 @@
-/* ptlinux.c -- portable timer implementation for linux */
-
-
-/* IMPLEMENTATION NOTES (by Mark Nelson): 
-
-Unlike Windows, Linux has no system call to request a periodic callback,
-so if Pt_Start() receives a callback parameter, it must create a thread
-that wakes up periodically and calls the provided callback function.
-If running as superuser, use setpriority() to renice thread to -20.  
-One could also set the timer thread to a real-time priority (SCHED_FIFO
-and SCHED_RR), but this is dangerous for This is necessary because  
-if the callback hangs it'll never return. A more serious reason
-is that the current scheduler implementation busy-waits instead 
-of sleeping when realtime threads request a sleep of <=2ms (as a way 
-to get around the 10ms granularity), which means the thread would never 
-let anyone else on the CPU.
-
-CHANGE LOG
-
-18-Jul-03 Roger Dannenberg -- Simplified code to set priority of timer
-            thread. Simplified implementation notes. 
-
-*/
-/* stdlib, stdio, unistd, and sys/types were added because they appeared
- * in a Gentoo patch, but I'm not sure why they are needed. -RBD
- */
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include "porttime.h"
-#include "time.h"
-#include "sys/resource.h"
-#include "pthread.h"
-
-#define TRUE 1
-#define FALSE 0
-
-#ifndef CLOCK_MONOTONIC_RAW
-#define CLOCK_MONOTONIC_RAW CLOCK_MONOTONIC
-#endif
-
-static int time_started_flag = FALSE;
-static struct timespec time_offset = {0, 0};
-static pthread_t pt_thread_pid;
-static int pt_thread_created = FALSE;
-
-/* note that this is static data -- we only need one copy */
-typedef struct {
-    int id;
-    int resolution;
-    PtCallback *callback;
-    void *userData;
-} pt_callback_parameters;
-
-static int pt_callback_proc_id = 0;
-
-static void *Pt_CallbackProc(void *p)
-{
-    pt_callback_parameters *parameters = (pt_callback_parameters *) p;
-    int mytime = 1;
-    /* to kill a process, just increment the pt_callback_proc_id */
-    /* printf("pt_callback_proc_id %d, id %d\n", pt_callback_proc_id,
-           parameters->id); */
-    if (geteuid() == 0) setpriority(PRIO_PROCESS, 0, -20);
-    while (pt_callback_proc_id == parameters->id) {
-        /* wait for a multiple of resolution ms */
-        struct timeval timeout;
-        int delay = mytime++ * parameters->resolution - Pt_Time();
-        if (delay < 0) delay = 0;
-        timeout.tv_sec = 0;
-        timeout.tv_usec = delay * 1000;
-        select(0, NULL, NULL, NULL, &timeout);
-        (*(parameters->callback))(Pt_Time(), parameters->userData);
-    }
-    /* printf("Pt_CallbackProc exiting\n"); */
-    // free(parameters);
-    return NULL;
-}
-
-
-PtError Pt_Start(int resolution, PtCallback *callback, void *userData)
-{
-    if (time_started_flag) return ptNoError;
-    /* need this set before process runs: */
-    clock_gettime(CLOCK_MONOTONIC_RAW, &time_offset);
-    if (callback) {
-        int res;
-        pt_callback_parameters *parms = (pt_callback_parameters *)
-            malloc(sizeof(pt_callback_parameters));
-        if (!parms) return ptInsufficientMemory;
-        parms->id = pt_callback_proc_id;
-        parms->resolution = resolution;
-        parms->callback = callback;
-        parms->userData = userData;
-        res = pthread_create(&pt_thread_pid, NULL,
-                             Pt_CallbackProc, parms);
-        if (res != 0) return ptHostError;
-        pt_thread_created = TRUE;
-    }
-    time_started_flag = TRUE;
-    return ptNoError;
-}
-
-
-PtError Pt_Stop()
-{
-    /* printf("Pt_Stop called\n"); */
-    pt_callback_proc_id++;
-    if (pt_thread_created) {
-        pthread_join(pt_thread_pid, NULL);
-        pt_thread_created = FALSE;
-    }
-    time_started_flag = FALSE;
-    return ptNoError;
-}
-
-
-int Pt_Started()
-{
-    return time_started_flag;
-}
-
-
-PtTimestamp Pt_Time()
-{
-    long seconds, ms;
-    struct timespec now;
-    clock_gettime(CLOCK_MONOTONIC_RAW, &now);
-    seconds = now.tv_sec - time_offset.tv_sec;
-    ms = (now.tv_nsec - time_offset.tv_nsec) / 1000000; /* round down */
-    return seconds * 1000 + ms;
-}
-
-
-void Pt_Sleep(int32_t duration)
-{
-    usleep(duration * 1000);
-}