- /**
- * Head of code common to all C targets
- **/
-
- #include "beremiz.h"
- #include <string.h>
- /*
- * Prototypes of functions provided by generated C softPLC
- **/
- void config_run__(unsigned long tick);
- void config_init__(void);
-
- /*
- * Prototypes of functions provided by generated target C code
- * */
- long long AtomicCompareExchange64(long long*, long long, long long);
- void __init_debug(void);
- void __cleanup_debug(void);
- /*void __retrieve_debug(void);*/
- void __publish_debug(void);
-
- /*
- * Variables used by generated C softPLC and plugins
- **/
- IEC_TIME __CURRENT_TIME;
- IEC_BOOL __DEBUG = 0;
- unsigned long __tick = 0;
- char *PLC_ID = NULL;
-
- /*
- * Variable generated by C softPLC and plugins
- **/
- extern unsigned long greatest_tick_count__;
-
- /* Help to quit cleanly when init fail at a certain level */
- static int init_level = 0;
-
- /*
- * Prototypes of functions exported by plugins
- **/
- int __init_py_ext(int argc,char **argv);
- void __cleanup_py_ext(void);
- void __retrieve_py_ext(void);
- void __publish_py_ext(void);
-
- /*
- * Retrieve input variables, run PLC and publish output variables
- **/
- void __run(void)
- {
- __tick++;
- if (greatest_tick_count__)
- __tick %= greatest_tick_count__;
-
- __retrieve_py_ext();
-
- /*__retrieve_debug();*/
-
- config_run__(__tick);
-
- __publish_debug();
-
- __publish_py_ext();
-
- }
-
- /*
- * Initialize variables according to PLC's default values,
- * and then init plugins with that values
- **/
- int __init(int argc,char **argv)
- {
- int res = 0;
- init_level = 0;
-
- /* Effective tick time with 1ms default value */
- if(!common_ticktime__)
- common_ticktime__ = 1000000;
-
- config_init__();
- __init_debug();
- init_level=1; if((res = __init_py_ext(argc,argv))){return res;}
- return res;
- }
- /*
- * Calls plugin cleanup proc.
- **/
- void __cleanup(void)
- {
- if(init_level >= 1) __cleanup_py_ext();
- __cleanup_debug();
- }
-
- void PLC_GetTime(IEC_TIME *CURRENT_TIME);
- void PLC_SetTimer(unsigned long long next, unsigned long long period);
-
-
-
- /**
- * Linux specific code
- **/
-
- #include <stdio.h>
- #include <string.h>
- #include <time.h>
- #include <signal.h>
- #include <stdlib.h>
- #include <pthread.h>
- #include <locale.h>
- #include <semaphore.h>
-
- static sem_t Run_PLC;
-
- long AtomicCompareExchange(long* atomicvar,long compared, long exchange)
- {
- return __sync_val_compare_and_swap(atomicvar, compared, exchange);
- }
- long long AtomicCompareExchange64(long long* atomicvar, long long compared, long long exchange)
- {
- return __sync_val_compare_and_swap(atomicvar, compared, exchange);
- }
-
- void PLC_GetTime(IEC_TIME *CURRENT_TIME)
- {
- struct timespec tmp;
- clock_gettime(CLOCK_REALTIME, &tmp);
- CURRENT_TIME->tv_sec = tmp.tv_sec;
- CURRENT_TIME->tv_nsec = tmp.tv_nsec;
- }
-
- void PLC_timer_notify(sigval_t val)
- {
- PLC_GetTime(&__CURRENT_TIME);
- sem_post(&Run_PLC);
- }
-
- timer_t PLC_timer;
-
- void PLC_SetTimer(unsigned long long next, unsigned long long period)
- {
- struct itimerspec timerValues;
- /*
- printf("SetTimer(%lld,%lld)\n",next, period);
- */
- memset (&timerValues, 0, sizeof (struct itimerspec));
- {
- #ifdef __lldiv_t_defined
- lldiv_t nxt_div = lldiv(next, 1000000000);
- lldiv_t period_div = lldiv(period, 1000000000);
- timerValues.it_value.tv_sec = nxt_div.quot;
- timerValues.it_value.tv_nsec = nxt_div.rem;
- timerValues.it_interval.tv_sec = period_div.quot;
- timerValues.it_interval.tv_nsec = period_div.rem;
- #else
- timerValues.it_value.tv_sec = next / 1000000000;
- timerValues.it_value.tv_nsec = next % 1000000000;
- timerValues.it_interval.tv_sec = period / 1000000000;
- timerValues.it_interval.tv_nsec = period % 1000000000;
- #endif
- }
- timer_settime (PLC_timer, 0, &timerValues, NULL);
- }
- //
- void catch_signal(int sig)
- {
- // signal(SIGTERM, catch_signal);
- signal(SIGINT, catch_signal);
- printf("Got Signal %d\n",sig);
- exit(0);
- }
-
-
- static unsigned long __debug_tick;
-
- pthread_t PLC_thread;
- static pthread_mutex_t python_wait_mutex = PTHREAD_MUTEX_INITIALIZER;
- static pthread_mutex_t python_mutex = PTHREAD_MUTEX_INITIALIZER;
- static pthread_mutex_t debug_wait_mutex = PTHREAD_MUTEX_INITIALIZER;
- static pthread_mutex_t debug_mutex = PTHREAD_MUTEX_INITIALIZER;
-
- int PLC_shutdown = 0;
-
- int ForceSaveRetainReq(void) {
- return PLC_shutdown;
- }
-
- void PLC_thread_proc(void *arg)
- {
- while (!PLC_shutdown) {
- sem_wait(&Run_PLC);
- __run();
- }
- pthread_exit(0);
- }
-
- #define maxval(a,b) ((a>b)?a:b)
- int startPLC(int argc,char **argv)
- {
- struct sigevent sigev;
- setlocale(LC_NUMERIC, "C");
-
- PLC_shutdown = 0;
-
- sem_init(&Run_PLC, 0, 0);
-
- pthread_create(&PLC_thread, NULL, (void*) &PLC_thread_proc, NULL);
-
- memset (&sigev, 0, sizeof (struct sigevent));
- sigev.sigev_value.sival_int = 0;
- sigev.sigev_notify = SIGEV_THREAD;
- sigev.sigev_notify_attributes = NULL;
- sigev.sigev_notify_function = PLC_timer_notify;
-
- pthread_mutex_init(&debug_wait_mutex, NULL);
- pthread_mutex_init(&debug_mutex, NULL);
- pthread_mutex_init(&python_wait_mutex, NULL);
- pthread_mutex_init(&python_mutex, NULL);
-
- pthread_mutex_lock(&debug_wait_mutex);
- pthread_mutex_lock(&python_wait_mutex);
-
- timer_create (CLOCK_MONOTONIC, &sigev, &PLC_timer);
- if( __init(argc,argv) == 0 ){
- PLC_SetTimer(common_ticktime__,common_ticktime__);
-
- /* install signal handler for manual break */
- signal(SIGINT, catch_signal);
- }else{
- return 1;
- }
- return 0;
- }
-
- int TryEnterDebugSection(void)
- {
- if (pthread_mutex_trylock(&debug_mutex) == 0){
- /* Only enter if debug active */
- if(__DEBUG){
- return 1;
- }
- pthread_mutex_unlock(&debug_mutex);
- }
- return 0;
- }
-
- void LeaveDebugSection(void)
- {
- pthread_mutex_unlock(&debug_mutex);
- }
-
- int stopPLC()
- {
- /* Stop the PLC */
- PLC_shutdown = 1;
- sem_post(&Run_PLC);
- PLC_SetTimer(0,0);
- pthread_join(PLC_thread, NULL);
- sem_destroy(&Run_PLC);
- timer_delete (PLC_timer);
- __cleanup();
- pthread_mutex_destroy(&debug_wait_mutex);
- pthread_mutex_destroy(&debug_mutex);
- pthread_mutex_destroy(&python_wait_mutex);
- pthread_mutex_destroy(&python_mutex);
- return 0;
- }
-
- extern unsigned long __tick;
-
- int WaitDebugData(unsigned long *tick)
- {
- int res;
- if (PLC_shutdown) return 1;
- /* Wait signal from PLC thread */
- res = pthread_mutex_lock(&debug_wait_mutex);
- *tick = __debug_tick;
- return res;
- }
-
- /* Called by PLC thread when debug_publish finished
- * This is supposed to unlock debugger thread in WaitDebugData*/
- void InitiateDebugTransfer()
- {
- /* remember tick */
- __debug_tick = __tick;
- /* signal debugger thread it can read data */
- pthread_mutex_unlock(&debug_wait_mutex);
- }
-
- int suspendDebug(int disable)
- {
- /* Prevent PLC to enter debug code */
- pthread_mutex_lock(&debug_mutex);
- /*__DEBUG is protected by this mutex */
- __DEBUG = !disable;
- if (disable)
- pthread_mutex_unlock(&debug_mutex);
- return 0;
- }
-
- void resumeDebug(void)
- {
- __DEBUG = 1;
- /* Let PLC enter debug code */
- pthread_mutex_unlock(&debug_mutex);
- }
-
- /* from plc_python.c */
- int WaitPythonCommands(void)
- {
- /* Wait signal from PLC thread */
- return pthread_mutex_lock(&python_wait_mutex);
- }
-
- /* Called by PLC thread on each new python command*/
- void UnBlockPythonCommands(void)
- {
- /* signal debugger thread it can read data */
- pthread_mutex_unlock(&python_wait_mutex);
- }
-
- int TryLockPython(void)
- {
- return pthread_mutex_trylock(&python_mutex) == 0;
- }
-
- void UnLockPython(void)
- {
- pthread_mutex_unlock(&python_mutex);
- }
-
- void LockPython(void)
- {
- pthread_mutex_lock(&python_mutex);
- }
-
- /*
- This file is part of Beremiz, a Integrated Development Environment for
- programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
-
- See COPYING.runtime
-
- Copyright (C) 2018: Sergey Surkov <surkov.sv@summatechnology.ru>
- Copyright (C) 2018: Andrey Skvortsov <andrej.skvortzov@gmail.com>
-
- */
-
- #ifndef HAVE_RETAIN
- #include <stdio.h>
- #include <stdint.h>
- #include <unistd.h>
- #include "iec_types.h"
-
- int GetRetainSize(void);
-
- /* Retain buffer. */
- FILE *retain_buffer;
- const char rb_file[] = "retain_buffer_file";
- const char rb_file_bckp[] = "retain_buffer_file.bak";
-
-
- /* Retain header struct. */
- struct retain_info_t {
- uint32_t retain_size;
- uint32_t hash_size;
- uint8_t* hash;
- uint32_t header_offset;
- uint32_t header_crc;
- };
-
- /* Init retain info structure. */
- struct retain_info_t retain_info;
-
- /* CRC lookup table and initial state. */
- static const uint32_t crc32_table[256] = {
- 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
- 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
- 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
- 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
- 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
- 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
- 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
- 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
- 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
- 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
- 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
- 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
- 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
- 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
- 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
- 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
- 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
- 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
- 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
- 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
- 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
- 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
- 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
- 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
- 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
- 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
- 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
- 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
- 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
- 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
- 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
- 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D,
- };
- uint32_t retain_crc;
-
-
- /* Calculate CRC32 for len bytes from pointer buf with init starting value. */
- uint32_t GenerateCRC32Sum(const void* buf, unsigned int len, uint32_t init)
- {
- uint32_t crc = ~init;
- unsigned char* current = (unsigned char*) buf;
- while (len--)
- crc = crc32_table[(crc ^ *current++) & 0xFF] ^ (crc >> 8);
- return ~crc;
- }
-
- /* Calc CRC32 for retain file byte by byte. */
- int CheckFileCRC(FILE* file_buffer)
- {
- /* Set the magic constant for one-pass CRC calc according to ZIP CRC32. */
- const uint32_t magic_number = 0x2144df1c;
-
- /* CRC initial state. */
- uint32_t calc_crc32 = 0;
- char data_block = 0;
-
- while(!feof(file_buffer)){
- if (fread(&data_block, sizeof(data_block), 1, file_buffer))
- calc_crc32 = GenerateCRC32Sum(&data_block, sizeof(char), calc_crc32);
- }
-
- /* Compare crc result with a magic number. */
- return (calc_crc32 == magic_number) ? 1 : 0;
- }
-
- /* Compare current hash with hash from file byte by byte. */
- int CheckFilehash(void)
- {
- int k;
- int offset = sizeof(retain_info.retain_size);
-
- rewind(retain_buffer);
- fseek(retain_buffer, offset , SEEK_SET);
-
- uint32_t size;
- fread(&size, sizeof(size), 1, retain_buffer);
- if (size != retain_info.hash_size)
- return 0;
-
- for(k = 0; k < retain_info.hash_size; k++){
- uint8_t file_digit;
- fread(&file_digit, sizeof(char), 1, retain_buffer);
- if (file_digit != *(retain_info.hash+k))
- return 0;
- }
-
- return 1;
- }
-
- void InitRetain(void)
- {
- int i;
-
- /* Get retain size in bytes */
- retain_info.retain_size = GetRetainSize();
-
- /* Hash stored in retain file as array of char in hex digits
- (that's why we divide strlen in two). */
- retain_info.hash_size = PLC_ID ? strlen(PLC_ID)/2 : 0;
- //retain_info.hash_size = 0;
- retain_info.hash = malloc(retain_info.hash_size);
-
- /* Transform hash string into byte sequence. */
- for (i = 0; i < retain_info.hash_size; i++) {
- int byte = 0;
- sscanf((PLC_ID + i*2), "%02X", &byte);
- retain_info.hash[i] = byte;
- }
-
- /* Calc header offset. */
- retain_info.header_offset = sizeof(retain_info.retain_size) + \
- sizeof(retain_info.hash_size) + \
- retain_info.hash_size;
-
- /* Set header CRC initial state. */
- retain_info.header_crc = 0;
-
- /* Calc crc for header. */
- retain_info.header_crc = GenerateCRC32Sum(
- &retain_info.retain_size,
- sizeof(retain_info.retain_size),
- retain_info.header_crc);
-
- retain_info.header_crc = GenerateCRC32Sum(
- &retain_info.hash_size,
- sizeof(retain_info.hash_size),
- retain_info.header_crc);
-
- retain_info.header_crc = GenerateCRC32Sum(
- retain_info.hash,
- retain_info.hash_size,
- retain_info.header_crc);
- }
-
- void CleanupRetain(void)
- {
- /* Free hash memory. */
- free(retain_info.hash);
- }
-
- int CheckRetainFile(const char * file)
- {
- retain_buffer = fopen(file, "rb");
- if (retain_buffer) {
- /* Check CRC32 and hash. */
- if (CheckFileCRC(retain_buffer))
- if (CheckFilehash())
- return 1;
- fclose(retain_buffer);
- retain_buffer = NULL;
- }
- return 0;
- }
-
- int CheckRetainBuffer(void)
- {
- retain_buffer = NULL;
- if (!retain_info.retain_size)
- return 1;
-
- /* Check latest retain file. */
- if (CheckRetainFile(rb_file))
- return 1;
-
- /* Check if we have backup. */
- if (CheckRetainFile(rb_file_bckp))
- return 1;
-
- /* We don't have any valid retain buffer - nothing to remind. */
- return 0;
- }
-
- #ifndef FILE_RETAIN_SAVE_PERIOD_S
- #define FILE_RETAIN_SAVE_PERIOD_S 1.0
- #endif
-
- static double CalcDiffSeconds(IEC_TIME* t1, IEC_TIME *t2)
- {
- IEC_TIME dt ={
- t1->tv_sec - t2->tv_sec,
- t1->tv_nsec - t2->tv_nsec
- };
-
- if ((dt.tv_nsec < -1000000000) || ((dt.tv_sec > 0) && (dt.tv_nsec < 0))){
- dt.tv_sec--;
- dt.tv_nsec += 1000000000;
- }
- if ((dt.tv_nsec > +1000000000) || ((dt.tv_sec < 0) && (dt.tv_nsec > 0))){
- dt.tv_sec++;
- dt.tv_nsec -= 1000000000;
- }
- return dt.tv_sec + 1e-9*dt.tv_nsec;
- }
-
-
- int RetainSaveNeeded(void)
- {
- int ret = 0;
- static IEC_TIME last_save;
- IEC_TIME now;
- double diff_s;
-
- /* no retain */
- if (!retain_info.retain_size)
- return 0;
-
- /* periodic retain flush to avoid high I/O load */
- PLC_GetTime(&now);
-
- diff_s = CalcDiffSeconds(&now, &last_save);
-
- if ((diff_s > FILE_RETAIN_SAVE_PERIOD_S) || ForceSaveRetainReq()) {
- ret = 1;
- last_save = now;
- }
- return ret;
- }
-
- void ValidateRetainBuffer(void)
- {
- if (!retain_buffer)
- return;
-
- /* Add retain data CRC to the end of buffer file. */
- fseek(retain_buffer, 0, SEEK_END);
- fwrite(&retain_crc, sizeof(uint32_t), 1, retain_buffer);
-
- /* Sync file buffer and close file. */
- #ifdef __WIN32
- fflush(retain_buffer);
- #else
- fsync(fileno(retain_buffer));
- #endif
-
- fclose(retain_buffer);
- retain_buffer = NULL;
- }
-
- void InValidateRetainBuffer(void)
- {
- if (!RetainSaveNeeded())
- return;
-
- /* Rename old retain file into *.bak if it exists. */
- rename(rb_file, rb_file_bckp);
-
- /* Set file CRC initial value. */
- retain_crc = retain_info.header_crc;
-
- /* Create new retain file. */
- retain_buffer = fopen(rb_file, "wb+");
- if (!retain_buffer) {
- fprintf(stderr, "Failed to create retain file : %s\n", rb_file);
- return;
- }
-
- /* Write header to the new file. */
- fwrite(&retain_info.retain_size,
- sizeof(retain_info.retain_size), 1, retain_buffer);
- fwrite(&retain_info.hash_size,
- sizeof(retain_info.hash_size), 1, retain_buffer);
- fwrite(retain_info.hash ,
- sizeof(char), retain_info.hash_size, retain_buffer);
- }
-
- void Retain(unsigned int offset, unsigned int count, void *p)
- {
- if (!retain_buffer)
- return;
-
- /* Generate CRC 32 for each data block. */
- retain_crc = GenerateCRC32Sum(p, count, retain_crc);
-
- /* Save current var in file. */
- fseek(retain_buffer, retain_info.header_offset+offset, SEEK_SET);
- fwrite(p, count, 1, retain_buffer);
- }
-
- void Remind(unsigned int offset, unsigned int count, void *p)
- {
- /* Remind variable from file. */
- fseek(retain_buffer, retain_info.header_offset+offset, SEEK_SET);
- fread((void *)p, count, 1, retain_buffer);
- }
- #endif // !HAVE_RETAIN
- /**
- * Tail of code common to all C targets
- **/
-
- /**
- * LOGGING
- **/
- #ifndef TARGET_LOGGING_DISABLE
-
- #ifndef LOG_BUFFER_SIZE
- #define LOG_BUFFER_SIZE (1<<14) /*16Ko*/
- #endif
- #ifndef LOG_BUFFER_ATTRS
- #define LOG_BUFFER_ATTRS
- #endif
-
- #define LOG_BUFFER_MASK (LOG_BUFFER_SIZE-1)
-
- static char LogBuff[LOG_LEVELS][LOG_BUFFER_SIZE] LOG_BUFFER_ATTRS;
- static void inline copy_to_log(uint8_t level, uint32_t buffpos, void* buf, uint32_t size){
- if(buffpos + size < LOG_BUFFER_SIZE){
- memcpy(&LogBuff[level][buffpos], buf, size);
- }else{
- uint32_t remaining = LOG_BUFFER_SIZE - buffpos;
- memcpy(&LogBuff[level][buffpos], buf, remaining);
- memcpy(LogBuff[level], (char*)buf + remaining, size - remaining);
- }
- }
- static void inline copy_from_log(uint8_t level, uint32_t buffpos, void* buf, uint32_t size){
- if(buffpos + size < LOG_BUFFER_SIZE){
- memcpy(buf, &LogBuff[level][buffpos], size);
- }else{
- uint32_t remaining = LOG_BUFFER_SIZE - buffpos;
- memcpy(buf, &LogBuff[level][buffpos], remaining);
- memcpy((char*)buf + remaining, LogBuff[level], size - remaining);
- }
- }
-
- /* Log buffer structure
-
- |<-Tail1.msgsize->|<-sizeof(mTail)->|<--Tail2.msgsize-->|<-sizeof(mTail)->|...
- | Message1 Body | Tail1 | Message2 Body | Tail2 |
-
- */
- typedef struct {
- uint32_t msgidx;
- uint32_t msgsize;
- unsigned long tick;
- IEC_TIME time;
- } mTail;
-
- /* Log cursor : 64b
- |63 ... 32|31 ... 0|
- | Message | Buffer |
- | counter | Index | */
- static uint64_t LogCursor[LOG_LEVELS] LOG_BUFFER_ATTRS = {0x0,0x0,0x0,0x0};
-
- void ResetLogCount(void) {
- uint8_t level;
- for(level=0;level<LOG_LEVELS;level++){
- LogCursor[level] = 0;
- }
- }
-
- /* Store one log message of give size */
- int LogMessage(uint8_t level, char* buf, uint32_t size){
- if(size < LOG_BUFFER_SIZE - sizeof(mTail)){
- uint32_t buffpos;
- uint64_t new_cursor, old_cursor;
-
- mTail tail;
- tail.msgsize = size;
- tail.tick = __tick;
- PLC_GetTime(&tail.time);
-
- /* We cannot increment both msg index and string pointer
- in a single atomic operation but we can detect having been interrupted.
- So we can try with atomic compare and swap in a loop until operation
- succeeds non interrupted */
- do{
- old_cursor = LogCursor[level];
- buffpos = (uint32_t)old_cursor;
- tail.msgidx = (old_cursor >> 32);
- new_cursor = ((uint64_t)(tail.msgidx + 1)<<32)
- | (uint64_t)((buffpos + size + sizeof(mTail)) & LOG_BUFFER_MASK);
- }while(AtomicCompareExchange64(
- (long long*)&LogCursor[level],
- (long long)old_cursor,
- (long long)new_cursor)!=(long long)old_cursor);
-
- copy_to_log(level, buffpos, buf, size);
- copy_to_log(level, (buffpos + size) & LOG_BUFFER_MASK, &tail, sizeof(mTail));
-
- return 1; /* Success */
- }else{
- char mstr[] = "Logging error : message too big";
- LogMessage(LOG_CRITICAL, mstr, sizeof(mstr));
- }
- return 0;
- }
-
- uint32_t GetLogCount(uint8_t level){
- return (uint64_t)LogCursor[level] >> 32;
- }
-
- /* Return message size and content */
- uint32_t GetLogMessage(uint8_t level, uint32_t msgidx, char* buf, uint32_t max_size, uint32_t* tick, uint32_t* tv_sec, uint32_t* tv_nsec){
- uint64_t cursor = LogCursor[level];
- if(cursor){
- /* seach cursor */
- uint32_t stailpos = (uint32_t)cursor;
- uint32_t smsgidx;
- mTail tail;
- tail.msgidx = cursor >> 32;
- tail.msgsize = 0;
-
- /* Message search loop */
- do {
- smsgidx = tail.msgidx;
- stailpos = (stailpos - sizeof(mTail) - tail.msgsize ) & LOG_BUFFER_MASK;
- copy_from_log(level, stailpos, &tail, sizeof(mTail));
- }while((tail.msgidx == smsgidx - 1) && (tail.msgidx > msgidx));
-
- if(tail.msgidx == msgidx){
- uint32_t sbuffpos = (stailpos - tail.msgsize ) & LOG_BUFFER_MASK;
- uint32_t totalsize = tail.msgsize;
- *tick = tail.tick;
- *tv_sec = tail.time.tv_sec;
- *tv_nsec = tail.time.tv_nsec;
- copy_from_log(level, sbuffpos, buf,
- totalsize > max_size ? max_size : totalsize);
- return totalsize;
- }
- }
- return 0;
- }
-
- #endif
-
- #ifndef TARGET_EXT_SYNC_DISABLE
-
- #define CALIBRATED -2
- #define NOT_CALIBRATED -1
- static int calibration_count = NOT_CALIBRATED;
- static IEC_TIME cal_begin;
- static long long Tsync = 0;
- static long long FreqCorr = 0;
- static int Nticks = 0;
- static unsigned long last_tick = 0;
-
- /*
- * Called on each external periodic sync event
- * make PLC tick synchronous with external sync
- * ratio defines when PLC tick occurs between two external sync
- * @param sync_align_ratio
- * 0->100 : align ratio
- * < 0 : no align, calibrate period
- **/
- void align_tick(int sync_align_ratio)
- {
- /*
- printf("align_tick(%d)\n", calibrate);
- */
- if(sync_align_ratio < 0){ /* Calibration */
- if(calibration_count == CALIBRATED)
- /* Re-calibration*/
- calibration_count = NOT_CALIBRATED;
- if(calibration_count == NOT_CALIBRATED)
- /* Calibration start, get time*/
- PLC_GetTime(&cal_begin);
- calibration_count++;
- }else{ /* do alignment (if possible) */
- if(calibration_count >= 0){
- /* End of calibration */
- /* Get final time */
- IEC_TIME cal_end;
- PLC_GetTime(&cal_end);
- /*adjust calibration_count*/
- calibration_count++;
- /* compute mean of Tsync, over calibration period */
- Tsync = ((long long)(cal_end.tv_sec - cal_begin.tv_sec) * (long long)1000000000 +
- (cal_end.tv_nsec - cal_begin.tv_nsec)) / calibration_count;
- if( (Nticks = (Tsync / common_ticktime__)) > 0){
- FreqCorr = (Tsync % common_ticktime__); /* to be divided by Nticks */
- }else{
- FreqCorr = Tsync - (common_ticktime__ % Tsync);
- }
- /*
- printf("Tsync = %ld\n", Tsync);
- printf("calibration_count = %d\n", calibration_count);
- printf("Nticks = %d\n", Nticks);
- */
- calibration_count = CALIBRATED;
- }
- if(calibration_count == CALIBRATED){
- /* Get Elapsed time since last PLC tick (__CURRENT_TIME) */
- IEC_TIME now;
- long long elapsed;
- long long Tcorr;
- long long PhaseCorr;
- long long PeriodicTcorr;
- PLC_GetTime(&now);
- elapsed = (now.tv_sec - __CURRENT_TIME.tv_sec) * 1000000000 + now.tv_nsec - __CURRENT_TIME.tv_nsec;
- if(Nticks > 0){
- PhaseCorr = elapsed - (common_ticktime__ + FreqCorr/Nticks)*sync_align_ratio/100; /* to be divided by Nticks */
- Tcorr = common_ticktime__ + (PhaseCorr + FreqCorr) / Nticks;
- if(Nticks < 2){
- /* When Sync source period is near Tick time */
- /* PhaseCorr may not be applied to Periodic time given to timer */
- PeriodicTcorr = common_ticktime__ + FreqCorr / Nticks;
- }else{
- PeriodicTcorr = Tcorr;
- }
- }else if(__tick > last_tick){
- last_tick = __tick;
- PhaseCorr = elapsed - (Tsync*sync_align_ratio/100);
- PeriodicTcorr = Tcorr = common_ticktime__ + PhaseCorr + FreqCorr;
- }else{
- /*PLC did not run meanwhile. Nothing to do*/
- return;
- }
- /* DO ALIGNEMENT */
- PLC_SetTimer(Tcorr - elapsed, PeriodicTcorr);
- }
- }
- }
-
- #endif