how to create function in c

.outofmemoryerror:permgen spaces 3.outofmemoryerror:unable to C 　　reate new native Thread. The Tomcat memory overflow solution can be used to set the Tomcat JVM parameters in the first two cases where the application itself does not have a memory leak. 　　(-xms-xmx-xx:permsize-xx:maxpermsize) The last one may need to adjust both the operating system and the Tomcat JVM parameters to achieve the goal. 　　The first: Heap overflow. Reason analysis: The JVM

Oracle's struct and Varray read-write methodsQiao Qiao Computer network 2010-02-25 qqread Anon Collection of this small and medium-sized share to QQ space Renren net Bean Micro bo Tencent Weibo more in this paper, read and write Oracle Special data types struct and Varray operation methods. First, create type creation type Struct_test as OBJECT (s VARCHAR, I number); CREATE TYPE Number_varray as Varray of number (12, 2); And then.This paper presents the operation methods of Struct and varray of

; Import Android.view.View; public class Shadereffect extends activity {@Override public void onCreate (Bundle savedinstancestate) {Super.onc Reate (savedinstancestate); Setcontentview (This) (new Imageeffect); Class Imageeffect extends view{Paint Paint; Public Imageeffect {Super (context); Paint = new Paint ()//initializes the brush, which is used for shadow effects behind. Paint.setantialias (TRUE);//antialiasing.

1. Create the statement for the trigger: CREATE TRIGGER {before | After} {INSERT | UPDATE | DELETE} On For each ROW -Triggers The code is as follows Copy Code --create Trigger name --on Table name --Trigger action --for/after insert/update/delete --as --t-sql Select * from SHOP_JB --insert into Shop_xs values (6,4000,1,getdate (), 3) --Update SHOP_JB set stock=stock-1 where id=6 --Create TRIGGER C Reate trigg

is flush this step, the log or through the OS buffer. The graph shows that the advantage of o_direct compared to Fdatasync is that it avoids double buffering, itself InnoDB buffer pool, which does not need to be written to the system buffer, but has a disadvantage because it is written directly to the disk. So it's less efficient to read and write sequentially than Fdatasync. O_direct is more efficient than fdatasync in a large number of randomly written environments, with more sequential w

This article illustrates the simple application of Android programming imitation iphone drag photo effects gallery. Share to everyone for your reference, specific as follows: Step 1: prepare the picture material. Will icon2,icon3,icon4,icon5,icon6 five pictures into the res/drawable plus icon.png itself a total of 6 pictures. Step 2: new Android project, named Gallerydemo. Step 3: Design the UI and modify the Main.xml code as follows: Step 4: Design the main program class Galle

. /** * Registers the method that should be executed when the Surfaceview is created, changed, and destroyed * * Surfaceholder.addcallback (new Surfaceholder.callback () { @Override public void surfacedestroyed (Surfaceholder holder) {LOG.I ("notification", "Surfaceholder was destroyed"); if (mediaplayer!=null) mediaplayer.release (); @Override public void surfacecreated (Surfaceholder holder) {LOG.I ("notification", "Surfaceholder is C

that there is a gstreamer-0.10 message (STATUS "GST 0.1") pkg_check_modules (GSTREAMER REQUIRED gstr　eamer-0.10) pkg_check_modules (Gst_app REQUIRED gstreamer-app-0.10) #再查找一下gstreamer -0.10,gstreamer-app-0.10 The condition for this return lookup is required endif () Add dependent libraries Find_package Catkin_package The find_package command is common cmake and are needed to-load the Catkin macros and specify dependencies to other ROS PAC Kages. Find_package (Catkin REQUIRED components

First, the project structure is simple, as shown in figure: Next is the Program.cs content: Using System; Using System.Collections.Generic; Using System.Linq; Using System.Text; Using System.Threading; Using Zookeeperclient; Using Zookeepernet; Namespace Zktest {class Program {static void Main (string[] args) {string _address = "127.0.0.1:2181"; Izookeeperfactory _factory=zookeeperfactory.instance; var ZK = _factory. Connect (_address); if (

; public class Splashactivity extends activity {@Override protected void onCreate (Bundle savedinstancestate) {Super.onc Reate (savedinstancestate); Judge whether it is the first time to open the application Boolean Isfirstopen = Sputils.getboolean (this, appconstants.first_open); If this is the first time you start, go to the Functional boot page if (!isfirstopen) {Intent Intent = new Intent (this, welcomeguideactivity.class); StartActivity (In

system type ... i686-pc-linux-gnu checking target system type ... i686-pc-linux-gnu checking for a bsd-compatible Install/usr/bin/install-c Checking whether build environment is sane ... yes checking for a thread-safe mkdir-p .../ Bin/mkdir-p Checking for gawk ... no checking for Mawk ... Mawk checking make whether $ (make) ... yes sets how to C reate a Ustar tar archive ... gnutar checking whether to enable maintainer-specific portions of makefiles.

the WebApps directory, OK, look at the final step, open the Server.xml in Tomcat's directory conf, and add: Done! Run it, start Tomcat, and then enter Http://localhost:8080/hello/HelloWorld in the browser, do you have it? Finally, if you want to use ant to do the above packing activities, let me tell you:For jars. In the Build.xml, For war, Well, that's all, I hope it helps you a little. ：） Add: Jar Basic Operati

ISCSI initiators. You could use a LVM logical volume, a disk partition, a whole disk, or a file. For production use a LVM logical volume is typically used. For this document, we'll create a file. The Create a 8Gib file: # dd If=/dev/zero of=/var/tmp/iscsi-disk1 bs=1m count=8000 Selinux # semanage Fcontext-a-T tgtd_var_lib_t/var/tmp/iscsi-disk1 # RESTORECON-RV /var/tmp/iscsi-disk1 Service Startup Configure the TGTD service to start on boot. Type: # service TGTD start # chkconfig TGTD on

highly optimized code, a local variable is used to bind the global variable: The code is as follows: Import Math def this_one_must_be_fast (x, Sin=math.sin, Cos=math.cos): ... How does this work? When Python executes a def statement, it creates a new function object using what is already ready (including the function's code object and the context property of the function). At the same time, the default parameter values of the function are computed. Different components can be used like t

Contacts page. When ('/contact ', {templateurl: ' pages/contact.html ', controller: ' Contactcontroller '}); }); //Create the controller and inject angular ' s $scope scotchapp.controller (' Maincontroller ', function ($scope) {//C reate a message to display in our we view $scope. Message = ' Everyone come and the good I look! '; }); Scotchapp.controller (' Aboutcontroller ', function ($scope) {$scope. Message = ' look! I am an about page. }); Scot

maximum value of (+ )C reate sequence mytable_id start with ten increment by 1 MaxValueThe following code Inserts the value produced by the emp_id sequence into the mytable tableINSERT INTO mytable values (Mytableid.nextval, ' Rose ', ' Beijing ', ' [email protected] ', date ' 2007-10-10 ');The following code modifies the information for the mytable_id sequence. The new maxvalue value is reset and the increment value is set to 2A lter sequence myta

specificationBasic principle: Paging query statements all need to be sorted, unless the business party explicitly requires that no sorting be used to randomly present the data. Detailed Description:1> Regular Paging statements (start: Number of start Records, Page_offset: Records per page): SELECT id,username from Gl_user WHERE username like '%@163.com ' ORDER by M. Gmt_create LIMIT start, page_offset;2> a paginated statement for a multi-table join, if the filter condition is on a single table,

| 0 | +-----------------------------------------+---------------------------------------+ all rows in Set (0.02 sec), C Trl-c--exit! aborted [emailprotected]:~/downloads/mysql$ mysqld--verbose--help | Grep-a 1 ' Default optionS ' 151106 15:37:14 [Warning] option ' table_definition_cache ': unsigned value [adjusted to] 151106 15:37:14 [Note] My Sqld (mysqld 5.5.44-log) starting as Process 76330 ... 151106 15:37:14 [Warning] can ' t create test file/usr/local/mysql/data/ubuntu.lower-test 151106 1

] ~]# mysql-u mk2-p123456 #不能登录Workaround:Mysql> Grant all privileges on * * to ' mk2 ' @ ' localhost ' identified by ' 123456 ' with GRANT option;Summary: % refers to any remote host, excluding the local address and localhost. In addition grant is immediately effective. No execution required:mysql> flush privileges; #手动更新命令 only if you manually modify the MySQL-related fields will you need to perform mysql> flush privileges;Only partial permissions are authorized:mysql> Grant Select,insert,up

Pre-installation:sudo apt-get-y install cmake libncurses5-dev bison g++ makehttp://now51jq.blog.51cto.com/3474143/1317281 http://crazyming.blog.51cto.com/1048571/1217201http://my.oschina.net/u/1019341/blog/186433Here is some problems I had during the installation.1. Mysqld:error while loading shared libraries:libaio.so.1:cannot open Shared object file:no such file or directory I Fixed after Installinglibaio1 : sudo apt-get Install libaio1 2. When I am trying to run/usr/local/mysql/scripts/m