def draw_banner():
# Get terminal size and store in globals
global NROWS, NCOLS
NROWS, NCOLS, hp, wp = struct.unpack(
'HHHH',
fcntl.ioctl(sys.stdout.fileno(), termios.TIOCGWINSZ,
struct.pack('HHHH', 0, 0, 0, 0)))
banner_height = 15
# Make sure we have enough lines to draw banner. Inform user if not
if NROWS < banner_height + 5 or NCOLS < 60:
mess = 'Please make terminal '
if NROWS < banner_height + 5:
mess += 'taller'
if NCOLS < 60: mess += ' and wider'
if NCOLS < 60: mess += 'wider'
MOVETO(1, 1)
CLEARLINE()
sys.stdout.write(REVERESED)
PRINTCENTERED(1, mess)
sys.stdout.write(RESET)
MOVETO(1, NROWS)
sys.stdout.flush()
return
# Draw border/background
sys.stdout.write(BACKGROUND_MAGENTA + BRIGHT_WHITE + BOLD)
PRINTAT(1, 1, '-' * NCOLS)
for i in range(2, banner_height):
PRINTAT(1, i, '|' + ' ' * (NCOLS - 2) + '|')
PRINTAT(1, banner_height, '-' * NCOLS)
# Draw status
PRINTAT(3, 2, 'Num. Events Processed: %d' % jana.GetNeventsProcessed())
#PRINTAT( 3, 3, ' Num. Tasks Completed: %d' % jana.GetNtasksCompleted() ) # This no longer exists
PRINTAT(3, 4, ' Num. Cores: %d' % jana.GetNcores())
PRINTAT(3, 5, ' Num. JThreads: %d' % jana.GetNJThreads())
PRINTAT(
NCOLS / 2, 2, 'Rate: %5.0fHz (%5.0fHz avg.)' %
(jana.GetInstantaneousRate(), jana.GetIntegratedRate()))
# Cursor is repositioned and stdout flushed in command_line after calling this
# so no need to do it here. Just reset to default drawing options.
sys.stdout.write(RESET)
def command_line():
global CLI_ACTIVE, history, mode, BANNER_ON
# Record tty settings so we can restore them when finished
# processing the CLI
mode = termios.tcgetattr(sys.stdin)
# Wait for first event to process so all messages are printed
# before switching to "raw" mode which screws up newlines
while jana.GetNeventsProcessed()<1: time.sleep(1)
# Set to raw mode so single characters get passed to us as they are typed
tty.setraw(sys.stdin)
prompt = 'jana> '
CLI_ACTIVE = True
BANNER_ON = True
history = []
last_draw_time = 0
while CLI_ACTIVE and not jana.IsDrainingQueues(): # loop for each line
# Define data-model for an input-string with a cursor
input = ""
index = 0
input_save = ""
history_index = len(history)
sys.stdout.write(prompt)
sys.stdout.flush()
while CLI_ACTIVE and not jana.IsDrainingQueues(): # loop for each character
# Redraw the screen periodically
if BANNER_ON and (time.time() - last_draw_time > 1):
draw_banner()
MOVETO(1,NROWS)
if index >= 0: RIGHT( index+len(prompt) ) ; sys.stdout.flush()
last_draw_time = time.time()
# Wait for a character to be typed. 0.100 is timeout in seconds
# Doing this first allows us to check if the app is quitting
# even if the user is not typing so *maybe* we can restore the
# termios settings before the final report is printed. It also
# allows us to update the screen periodically when nothing is
# being typed.
i, o, e = select.select( [sys.stdin], [], [], 0.100 )
if not i: continue # nothing was typed
char = ord(sys.stdin.read(1)) # read one char and get char code
# Manage internal data-model
if char == 3: return # CTRL-C
elif char in {10, 13}: break # LF or CR
elif char == 9: # TAB
rindex = len(input) - index
input = tab_complete(input)
index = len(input) - rindex
elif 32 <= char <= 126: # Non-special character
input = input[:index] + chr(char) + input[index:]
index += 1
elif char == 127: # Delete/Backspace
input = input[:index-1] + input[index:]
index -= 1
elif char == 27: # Left or right arrow start
next1, next2 = ord(sys.stdin.read(1)), ord(sys.stdin.read(1))
if next1==91 and next2==68: index = max(0, index - 1) # Left arrow
if next1==91 and next2==67: index = min(len(input), index + 1) # Right arrow
if next1==91 and next2==66: # Down arrow
if history_index < (len(history)-1):
history_index += 1
input = history[ history_index ]
index = len(input)
elif history_index == (len(history)-1):
history_index += 1
input = input_save
index = len(input)
if next1==91 and next2==65: # Up arrow
if history_index > 0:
if history_index == len(history): input_save = input
history_index -= 1
input = history[ history_index ]
index = len(input)
# else:
# print '\nunknown char: %d\n' % int(char)
# sys.stdout.flush()
# Print current input-string
MOVETO(1,NROWS)
CLEARLINE()
sys.stdout.write(prompt + syntax_highlight(input))
MOVETO(1,NROWS)
if index >= 0: RIGHT( index+len(prompt) )
sys.stdout.flush()
# Process one input line
print ''
MOVETO(1,NROWS)
termios.tcsetattr(sys.stdin, termios.TCSAFLUSH, mode)
process_command( input )
tty.setraw(sys.stdin)
MOVETO(1,NROWS)
sys.stdout.flush()
input = ""
index = 0
last_draw_time = 0 # force banner to redraw on next iteration
# Restore terminal settings
termios.tcsetattr(sys.stdin, termios.TCSAFLUSH, mode)
print '\nCLI exiting ...\n'
def process_command( input ): global CLI_ACTIVE, BANNER_ON, mode stripped = input.rstrip() tokens = input.rstrip().split() if len(tokens) < 1: return cmd = tokens[0] args = tokens[1:] print 'processing command: ' + ' '.join(tokens) LEFT(1000) #--- banner if cmd=='banner': if len(args) == 0: print 'command banner requires you to specify "on" or "off". (see help for details)' elif args[0] == 'on' : BANNER_ON = True elif args[0] == 'off': BANNER_ON = False else: print 'command banner requires you to specify "on" or "off". (see help for details)' #--- exit, quit elif cmd=='exit' or cmd=='quit': CLI_ACTIVE = False jana.Quit() #--- help elif cmd=='help': print_help() #--- history elif cmd=='history': idx = 0 for h in history: print '%3d %s\r' % (idx, h) idx += 1 print '%3d %s\r' % (idx, ' '.join(tokens) ) # include this history command which will be added below #--- nthreads elif cmd=='nthreads': if len(args) == 0: print 'Number of JThreads: %d' % jana.GetNJThreads() elif len(args)==1: print 'Number of JThreads now at: %d' % jana.SetNJThreads( int(args[0]) ) else: print 'njthreads takes either 0 or 1 argument (see help for details)' #--- parameter elif cmd=='parameter': if len(args) == 0: print 'command parameter requires arguments. (see help for details)' elif args[0] == 'get': if len(args)==2: print '%s: %s' % (args[1], jana.GetParameterValue(args[1])) else: print 'command parameter get requires exactly 1 argument! (see help for details)' elif args[0] == 'set': if len(args)==3: jana.SetParameter(args[1], args[2]) else: print 'command parameter set requires exactly 2 arguments! (see help for details)' elif args[0] == 'list': if len(args)==1: jana.PrintParameters(True) else: print 'command parameter list requires no arguments! (see help for details)' #--- resume elif cmd=='resume': jana.Resume() print 'event processing resumed' #--- status elif cmd=='status': jana.PrintStatus() print '' #--- stop elif cmd=='stop': jana.Stop(True) print 'event processing stopped after %d events (use "resume" to start again)' % jana.GetNeventsProcessed() #--- unknown command else: print 'Unknown command: ' + cmd return history.append( ' '.join(tokens) ) # add to history
import time import jana jana.SetTicker( False ) jana.WaitUntilAllThreadsRunning() for i in range(0,20): time.sleep(1) print '\nCalled jana.GetNeventsProcessed: %d' % jana.GetNeventsProcessed()
# Copyright 2020, Jefferson Science Associates, LLC.
# Subject to the terms in the LICENSE file found in the top-level directory.
#
# This example JANA python script
import time
import jana
print('Hello from jana.py!!!')
# Turn off JANA's standard ticker so we can print our own updates
jana.SetTicker(False)
# Wait for 4 seconds before allowing processing to start
for i in range(1, 5):
time.sleep(1)
print(" waiting ... %d" % (4 - i))
# Start event processing
jana.Start()
# Wait for 5 seconds while processing events
for i in range(1, 6):
time.sleep(1)
print(" running ... %d (Nevents: %d)" % (i, jana.GetNeventsProcessed()))
# Tell program to quit gracefully
jana.Quit()