SHMIDCAT(1) Shared Memory Trampoline SHMIDCAT(1)NAME
shmidcat - Copies stdin/file to a shared memory block for gtkwave(1)SYNTAX
shmidcat [VCDFILE]
DESCRIPTION
Copies either the file specified at the command line or stdin (if no file specified) line by line to a shared memory block. stdout will
contain a shared memory ID which should be passed on to gtkwave(1).
EXAMPLES
To run this program the standard way type:
cat whatever.vcd | shmidcat
The shared memory ID is emitted to stdout.
shmidcat whatever.vcd | gtkwave -v -I whatever.sav
GTKWave directly grabs the ID from stdin.
LIMITATIONS
This program is mainly for illustrative and testing purposes only. Its primary use is for people who wish to write interactive VCD dumpers
for gtkwave(1) as its source code may be examined, particularly the emit_string() function. It can also be used to test if an existing VCD
file will load properly in interactive mode. Note that it can also be used to redirect VCD files which are written into a pipe to gtk-
wave(1) in a non-blocking fashion.
AUTHORS
Anthony Bybell <bybell@rocketmail.com>
SEE ALSO gtkwave(1)Anthony Bybell 3.0.8 SHMIDCAT(1)
Check Out this Related Man Page
LXT2VCD(1) Filetype Conversion LXT2VCD(1)NAME
lxt2vcd - Converts LXT2 files to VCD
SYNTAX
lxt2vcd [option]... [LXT2FILE]
DESCRIPTION
Converts LXT2 files to VCD files on stdout. Note that "regular" LXT2 files will convert to VCD files with monotonically increasing time
values. LXT2 files which are dumped with the "partial" option (to speed up access in wave viewers) will dump with monotonically increasing
time values per 2k block of nets. This may be fixed in later versions of lxt2vcd.
OPTIONS -l,--lxtname <filename>
Specify LXT2 input filename.
-f,--flatearth
Emit flattened hierarchies.
-n,--notruncate
Do not shorten bitvectors. This disables binary value compression as described in the IEEE-1364 specification. (i.e., all values
except for '1' left propagate as a sign bit on vectors which do not fill up their entire declared width)
-h,--help
Display help then exit.
EXAMPLES
To run this program the standard way type:
lxt2vcd filename.lxt
The VCD conversion is emitted to stdout.
LIMITATIONS
lxt2vcd does not re-create glitches as these are coalesced together into one value change during the writing of the LXT2 file.
AUTHORS
Anthony Bybell <bybell@rocketmail.com>
SEE ALSO vcd2lxt2(1)vcd2lxt(1)gtkwave(1)Anthony Bybell 3.2.2 LXT2VCD(1)
My supervisor keep getting "stdin not tty" or something like that when he pipe or redirect input into a program. Others
don't seem to get this message. Is there some way I can help him to fix or turn this off?
Thx in advance (1 Reply)
hi,
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I would like to make a program which could read its data from stdin
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Hi,
Program A: uses pipe()
I am able to read the stdout of PROGAM B (stdout got through system() command) into PROGRAM A using:
* child
-> dup2(fd, STDOUT_FILENO);
-> execl("/path/PROGRAM B", "PROGRAM B", NULL);
* parent
-> char line;
-> read(fd, line, 100);
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hay guys
I want to use shared memory for communication between multiple processes, each one can write and read. I am unable to build the logic, should I go for each process has shared memory with other or should I create one block of memory and shared between all of them.
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Hi,
Program A: uses pipe()
I am able to read the stdout of PROGAM B (stdout got through system() command) into PROGRAM A using:
* child
-> dup2(fd, STDOUT_FILENO);
-> execl("/path/PROGRAM B", "PROGRAM B", NULL);
* parent
-> char line;
-> read(fd, line, 100);
Question:
---------... (3 Replies)
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Oracle Linux 5.6 64-bit (derivative of RHEL)
Dear Ann Landers,
This is about as bizarre as anything I've ever seen.
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