Subtract two pointers, which is the number of two pointer types that are spaced between two pointers.such as: int *p,*q;P-q= (p address-Q address)/sizeof (int)#include intMain () {inta[9]={1,2,3,4,5,6,7,8,9}; Char*p,*Q; int*p2,*Q2; P=(Char*) A; Q=(Char*) a[2]; printf ("p=%08x q=%08x a[%d]=%d\n", p,q,q-p,a[q-p]); //The result is: x,x+8,8/sizeof (char), a[8]=9P2=A; Q2=a[2]; printf ("p2=%
number of digits to output (if the number of digits being output is less than the specified precision, add 0 to the front of the output value).printf ("%.4d/n", 873)printf ("%.9d/n", 873)The output result is:0873000000873
sprintf (S, "%08x", 4567); and sprintf (S, "%.8x", 4567); The two ways of writing are the same.printf ("%.8x", 4567); and printf ("%08x", 4567); The two ways of writing are the same. %
Looks like kernel ignored Bootargs.
The code is located in the Build_dir...arch/mips/ralink PROM.C
static __init void Prom_init_cmdline (int argc, char **argv)
{
int i;
Manfeel, mod to pr_info from Pr_debug
Pr_info ("prom:fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
(unsigned int)
: processaddressPurpose:Returns an address of memory slot for the given process index.Parameters:Byte p_byprocnum-process number (slot index) between 0 and 31Returns:Address of the memory slot.-------------------------------------------------------------------*/Inline DWORD processaddress (byte p_byprocnum){Return 0x02000000 * (p_byprocnum + 1 );}
Int winapi winmain (hinstance,Hinstance hprevinstance,Lptstr lpcmdline,Int ncmdshow){File * FP;DWORD l_dwoldpermissions = 0;
If (FP = fopen ("// apis.
------------------\ n", size); for (int i = 0;i { p = (DWORD) base+i* 4; pnext = * (DWORD *) (p); printf (" |--0x%08x: 0x%08x", P,pnext); //What's in the print class? if (pnext>0x400000) //Print the contents of a contiguous three address under this address { printf (": 0x%08x 0x%08x 0x%
state of the socket, while we typically use Netstat to see the state of these socketsCase Tcp_syn_recv:if (acceptable) {tp->copied_seq = TP->RCV_NXT;SMP_MB (); Tcp_set_state (SK, TCP_ESTABLISHED);We see that the status from SYN_RECV is set directly to established, that is, when the server receives the ACK from the client, the status is TCP_SYN_RECV and immediately enters the Tcp_rcv_state_ The process function is set to state established, there is basically no tcp_syn_recv state period, but we
0x00000000 c. after applying for a new memory, the pointer variable value is 0x6e7a78 d. after the memory is released, P becomes a wild pointer, but the value of P is still the requested memory address 0x6e7a78, but the P pointer cannot be used at this time. E. If P = NULL, p points to the address 0x00000000 again.
It can be seen that after we release the pointer variable, the pointer variable will become a wild pointer. If we reference this pointer at this time, illegal access will occur. Ther
streambytestransferred, // total number of bytes transferred for this streamDWORD dwstreamnumber, // The current streamDWORD dwcallbackreason, // reason for callbackHandle hsourcefile, // handle to the source fileHandle hdestinationfile, // handle to the destination fileLpvoid lpdata // passed by copyfileex){Static int nrecord = 0;Nrecord ++;Printf ("Callback times: % d transmitted: % 08x: % 08x file size:
that this can only be used in 2000 and XP.
The following code adds the filter graph in the application to the rot,
Hresult augraph: addtorot (iunknown * punkgraph, DWORD * pdwregister){Hresult hR = noerror;Imoniker * pmoniker = NULL;Irunningobjecttable * prot = NULL;If (failed (getrunningobjecttable (0, prot ))){Return e_fail;}
Wchar wsz [256];: Memset (wsz, 0,256 );// WsprintfW (wsz, l "PID: % 08x igraphfilter = %
= (msg_q*) msg_q_data;//Lock P_msg_q Mutex,pthread_mutex_lock and PTHREAD_COND_XXX series functions are generally paired, preventing the competition between multi-threaded PTHREAD_COND_XXX series functionsPthread_mutex_lock (p_msg_q->list_mutex); LOC_LOGD ("%s:sending message with handle = 0x%08x\n", __function__, msg_obj);if(p_msg_q->unblocked) {//If it is not locked, the MSG is not availableLoc_loge ("%s:message queue has been unblocked.\n", __func
1, the initialization of global variables.2. Cases not found yet./*************************************************/First on connection file SCTLr_rom1 0x30000000 0x00010000 { ; Load Region size_region Er_rom1 0x30000000 0x00010000 { ; Load address = execution Address *.o (RESET, +first) * (inroot$ $Sections) . Any (+ro) } rw_ram1 0x30010000 0x02000000 { ; RW Data . Any (+RW +zi) } rw_iram1 0x40000000 0x00001000 { . Any (+RW +zi) }}1, the initialization of global varia
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.