For example,
Is the string constant available until the pointer variable as an automatic variable is discarded?
String literals are static objects so they are in existence as long as the program is running. As "pointer" is an automatic variable it is discarded upon exit from the block in which it is defined but the string literal will still be in memory but you wont have a handle for accessing it anymore. Automatic variables are on the stack segment while static objects are in the text segment or the readonly portion of the data segment and yes the compiler automatically allocates storage for them without the programmer having to do anything...
In a declaration, I have:
const char comment_begin = "<!--";
const char comment_end = "-->";
const int comment_begin_len = strlen(comment_begin);
const int comment_end_len = strlen(comment_end);
When I compile, I get the warnings:
emhttpc.c:64: warning: initializer element is not... (10 Replies)
I'm not sure how to best explain what I'd like to do, so let me give an example. I used to work in a department that deals with internet security. This department had an "internal" website (only people in the building can get on it) and an "external" website (anyone in the world can get on it --... (1 Reply)
Hallo
I have maybe a little bit advanced request....
I need to choose one random part betwen %....
so i have this..
%
text1 text1 text1
text1 text1 text1
text1 text1 text1
%
text2 text2
text2 text2 text2
%
text3 text3 text3
tetx3
%
this choose text between %
awk ' /%/... (8 Replies)
Hi friends,
I am new to Solaris, I have just managed to install Solaris 10 under VirtualBox. As I use the system, I constantly get some very disturbing error messages on my screen, I hope you will help me remove them. Messages are
# syslogd: line 24: WARNING: loghost could not be resolved
... (6 Replies)
Hi. I define my variables as:
month=jul
DD=17
YEAR=2012
transmission_file_name_only=test_$month$DD$YEAR_partial.dat
However when I run my script the variable 'transmission_file_name_only' resolves to:
File "/downloads/test_jul17.dat" not found.
How can I append this '_partial'... (3 Replies)
Hi All !
I am just trying to print bash variable in awk statement as string
here is my script
n=1
for file in `ls *.tk |sort -t"-" -k2n,2`; do
ak=`(awk 'FNR=='$n'{print $0}' res.dat)`
awk '{print "'$ak'",$0}' OFS="\t" $file
n=$((n+1))
unset ak
doneI am getting following error
awk:... (7 Replies)
I'm using LM 17.3x LIVE. Have constant and sometimes, severe lagging issues. Problems started when I "upgraded" to 18.3x. I tried 5 other distros all with the same issues. Went back to 17.3 and , alas, the problem followed. Found this: sudo gedit /etc/sysctl. conf vm. swappiness = 15, but all it... (4 Replies)
Discussion started by: 69Rixter
4 Replies
LEARN ABOUT PHP
ddi_dma_nextseg
ddi_dma_nextseg(9F) Kernel Functions for Drivers ddi_dma_nextseg(9F)NAME
ddi_dma_nextseg - get next DMA segment
SYNOPSIS
#include <sys/ddi.h>
#include <sys/sunddi.h>
int ddi_dma_nextseg(ddi_dma_win_t win, ddi_dma_seg_t seg, ddi_dma_seg_t *nseg);
INTERFACE LEVEL
This interface is obsolete. ddi_dma_nextcookie(9F) should be used instead.
PARAMETERS
win A DMA window.
seg The current DMA segment or NULL.
nseg A pointer to the next DMA segment to be filled in. If seg is NULL, a pointer to the first segment within the specified win-
dow is returned.
DESCRIPTION
ddi_dma_nextseg() gets the next DMA segment within the specified window win. If the current segment is NULL, the first DMA segment within
the window is returned.
A DMA segment is always required for a DMA window. A DMA segment is a contiguous portion of a DMA window (see ddi_dma_nextwin(9F)) which
is entirely addressable by the device for a data transfer operation.
An example where multiple DMA segments are allocated is where the system does not contain DVMA capabilities and the object may be non-con-
tiguous. In this example the object will be broken into smaller contiguous DMA segments. Another example is where the device has an upper
limit on its transfer size (for example an 8-bit address register) and has expressed this in the DMA limit structure (see
ddi_dma_lim_sparc(9S) or ddi_dma_lim_x86(9S)). In this example the object will be broken into smaller addressable DMA segments.
RETURN VALUES
ddi_dma_nextseg() returns:
DDI_SUCCESS Successfully filled in the next segment pointer.
DDI_DMA_DONE There is no next segment. The current segment is the final segment within the specified window.
DDI_DMA_STALE win does not refer to the currently active window.
CONTEXT
ddi_dma_nextseg() can be called from user or interrupt context.
EXAMPLES
For an example, see ddi_dma_segtocookie(9F).
ATTRIBUTES
See attributes(5) for a description of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Stability Level |Obsolete |
+-----------------------------+-----------------------------+
SEE ALSO attributes(5), ddi_dma_addr_setup(9F), ddi_dma_buf_setup(9F), ddi_dma_nextcookie(9F), ddi_dma_nextwin(9F), ddi_dma_segtocookie(9F),
ddi_dma_sync(9F), ddi_dma_lim_sparc(9S), ddi_dma_lim_x86(9S), ddi_dma_req(9S)
Writing Device Drivers
SunOS 5.10 27 Sep 2002 ddi_dma_nextseg(9F)