Original address: http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2014/1209/2136.htmlOffline caching is when the network is unblocked, the data received from the server is saved locally, and the data in the local file is read directly after the network is disconnected.To save network data locally:You can write your own way to save the data cost of the file, stored in any directory of the Android system (of course, have permission to do), but in
During the test, it was found that the js data contains the plus sign + and a connection error occurred when it was uploaded to the backend through ajax. Deletion +, and the link was unblocked. It was indeed a problem. Someone raised a bug yesterday to escape the plus sign, I was depressed when I said "B + detective" and "C + detective" couldn't watch the video, because other resources can play the video. Why can't I play the video, in addition, I hav
signal blocking set.
Use these functions as an example.
# I nclude
# I nclude
# I nclude
# I nclude
Int main (int argc, char ** argv)
{
Double y;
Sigset_t intmask;
Int I, repeat_factor;
If (argc! = 2)
{
Fprintf (stderr, "Usage: % s repeat_factor \ n \ a", argv [0]);
Exit (1 );
}
If (repeat_factor = atoi (argv [1]) Sigemptyset ( intma
waiting,
The signal identified by the set should be unblocked, but the initial signal mask will be restored when it is called and returned.
Use sigwait () to separate threads from asynchronous signals. You can create a thread to listen to asynchronous messages.
Other threads are created to block the specified asynchronous signal.
If the signal is sent, sigwait () clears the pending signal and returns a number. Many threads can simultaneously
Call sig
Original article address:Xcode debugging problems
Author:Nickjackson
1. Set nszombieenabled
With the nszombieenabled function, when the Code accesses a place where the memory has been released, it will give you the following prompt, not just exec_bad_access:
2008-10-0318:10:39.933HelloWorld[1026:20b] *** -[GSFont ascender]: message sent to deallocated instance0x126550
If you want to view the above address allocation information
Enable mallocstacklogging (check mallocstacklogging in xcode4)
Shell
the user space ). ("Before sigprocmask is returned, at least one of the pending and unblocked signals will be delivered to the process "???) If a pending signal is waiting for processing and the signal is not blocked by the process, the process will unload the structure occupied by the signal in the pending signal chain before running the corresponding signal processing function. Whether to delete signals from pending processes is different from real
user State. page missing exceptions are the only exceptions that can be triggered by kernel state.
A page missing exception means that the process is switched. Therefore, the process is interrupted and never executed, which can lead to page missing operations.
3. the interrupt processing program runs in the kernel state.
When the interruption occurs in the user State, switch the user space stack of the process to the system space stack of the process. When switching, the kernel stack is empty.
(stderr, "Usage: % s repeat_factor \ n \ a", argv [0]);
Exit (1 );
}
If (repeat_factor = atoi (argv [1]) Sigemptyset ( intmask);/* set the signal set to null */
Sigaddset ( intmask, SIGINT);/* Add the Ctrl + C signal to interrupt */
While (1)
{
/* Blocking signal. We do not want to save the original set. Therefore, the parameter is NULL */
Sigprocmask (SIG_BLOCK, intmask, NULL );
Fprintf (stderr, "SIGINT signal blocked \ n ");
For (I = 0; I
Fprintf (stderr, "Blocked calculation is finished \
parameter is the name of the function that captures the signal4. Blocking the signal1> actually performs signal processing actions called signal recursion.The state of the 2> signal from generation to delivery is called signal pending.The process can choose to block a signal, and the blocked signal will remain in the pending state until the process has unblocked the signal before performing the recursive action. (ignoring is different from blocking,
The representation of the signal in the kernelQ The processing action of the signal is called signal recursion (Delivery), the signal from the generation to the state between the recursion, called Signal pending (Pending). A process can choose to block (block) a signal. When the blocked signal is generated, it remains in the pending state until the process has unblocked the signal and executes the recursive action.Q Note that blocking and ignoring are
: A brief introduction to Maven is documented.In the default case, we can be in the user directory (C:\USERS\HAILANG\.M2), Find A. M2 folder that contains the Setting.xml file (this file was copied from the MAVEN installation directory) and the repository file, the behavior of MAVEN was customized in Setting.xml, and the jar package that was downloaded to the local by Maven is included in the repository text Folder.Part III: Setting up an HTTP proxySometimes your company is asking you to use a s
1018: [SHOI2008] clogged traffic trafficTime Limit:3 Sec Memory limit:162 MBsubmit:2252 solved:711[Submit] [Status] [Discuss]DescriptionOne day, because of some kind of cross-over phenomenon, you came to the legendary small country. The layout of the small country is very peculiar, the whole country's transportation system can be regarded as a 2 row C-column rectangular grid, each point on the grid represents a city, there is a road between adjacent cities, so there are a total of 2C cities and
apt-get install Nvidia-cuda-toolkitI'm still close to the 400MB file to download, it is fully automatic, so long as the network unblocked, a cup of coffee in the hand, and then you can xxx. Sadly, I was late here, next door WiFi is broken, notebook 360 WiFi connection on a will also broken, only to collect things back to the dormitory, tomorrow to continue. Look at the table, leaning, 00:03, and the clock-out time missed again today.The next day, ins
. Therefore, it is not suitable for synchronization between audio and video media [4]. To solve this problem, this paper proposes a synchronization scheme which can be applied to different network conditions by using RTP/RTCP and controllable audio-video coding technology in combination with sender. The main performance in the following two aspects: 1, the transmission of data collection, encoding is sent control; 2. Using the feedback index of RTCP, the audio-video coding algorithm can adapt to
The book "Advanced Programming in UNIX environments" comes with many small and exquisiteProgramWhen I read this bookCodeI have rewritten it according to my own understanding (most of it is on the copybook) and deepened my understanding (it is too difficult to read a book, haha ). This example is successfully tested on ubuntu10.04.
Program Introduction: in UNIX environment, we can let the program shield some signals (except sigkill signals and sigstop). This example demonstrates this functio
system's interprocess communication mechanism reveals their similarity: the Synchronized method or block provides functionality similar to the operating system primitives, and their execution is not interfered by the multithreading mechanism, which is equivalent to blocks and wakeup Primitives (this pair of methods are declared as synchronized). Their combination allows us to implement an array of sophisticated inter-process communication algorithms (such as semaphore algorithms) on the operati
) {/*infinite loop*/ mutex_ Lock (MU); /*aquire Mutex and lock it, if cannot, Wait until mutex is Unblocked*/if (i! = 0) i = i-1else" no more Tickets "); Exit (); } mutex_unlock (MU); /*release mutex, make it Unblocked*/ The first thread executing mutex_lock () gets MU first. Other threads that want to get MU must wait until the first thread executes to Mutex_unlock () to release mu before
results:
./A. out
^ \ Generate a signal once (within 5 seconds)
After SIGQUIT pending returns from sleep
Caught SIGQUIT in the signal processing program
After SIGQUIT unblocked is returned from sigprocmask
^ \ Quit again generates a signal
./A. out
^ \ Generate 10 Signals
SIGQUIT pending
Caught SIGQUIT only generates signals once
SIGQUIT unblocked
^ \ Quit again generates a signal
The process blocks the SI
1 on the Standby page, click "Phone".
2 Click "More".
3 Click "Set".
4 Click "Call Stop".
5 Click Block List.
6 Add a blocking number.
7 Input, click the "+" icon can be added.
81 phone numbers have been blocked. If you need to block more numbers, continue typing and adding.
9 If you need to unblock the number, proceed: Find the number that needs to be unblocked, and click the "-" icon after the number.
101 numbers have been
PHP randomly retrieves unblocked Domain Names (Domain Name Detection), and php shields
Go to www.weixin139.com to obtain the user name and KEY.
The above section describes how to randomly obtain unblocked Domain Names (Domain Name detection) in PHP. I hope it will help you. If you have any questions, please leave a message, the editor will reply to you in time!
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