1*436bf2bcSAndroid Build Coastguard Workerlibtraceevent(3) 2*436bf2bcSAndroid Build Coastguard Worker================ 3*436bf2bcSAndroid Build Coastguard Worker 4*436bf2bcSAndroid Build Coastguard WorkerNAME 5*436bf2bcSAndroid Build Coastguard Worker---- 6*436bf2bcSAndroid Build Coastguard Workertep_read_number - Reads a number from raw data. 7*436bf2bcSAndroid Build Coastguard Worker 8*436bf2bcSAndroid Build Coastguard WorkerSYNOPSIS 9*436bf2bcSAndroid Build Coastguard Worker-------- 10*436bf2bcSAndroid Build Coastguard Worker[verse] 11*436bf2bcSAndroid Build Coastguard Worker-- 12*436bf2bcSAndroid Build Coastguard Worker*#include <event-parse.h>* 13*436bf2bcSAndroid Build Coastguard Worker 14*436bf2bcSAndroid Build Coastguard Workerunsigned long long *tep_read_number*(struct tep_handle pass:[*]_tep_, const void pass:[*]_ptr_, int _size_); 15*436bf2bcSAndroid Build Coastguard Worker-- 16*436bf2bcSAndroid Build Coastguard Worker 17*436bf2bcSAndroid Build Coastguard WorkerDESCRIPTION 18*436bf2bcSAndroid Build Coastguard Worker----------- 19*436bf2bcSAndroid Build Coastguard WorkerThe *tep_read_number()* function reads an integer from raw data, taking into 20*436bf2bcSAndroid Build Coastguard Workeraccount the endianness of the raw data and the current host. The _tep_ argument 21*436bf2bcSAndroid Build Coastguard Workeris the trace event parser context. The _ptr_ is a pointer to the raw data, where 22*436bf2bcSAndroid Build Coastguard Workerthe integer is, and the _size_ is the size of the integer. 23*436bf2bcSAndroid Build Coastguard Worker 24*436bf2bcSAndroid Build Coastguard WorkerRETURN VALUE 25*436bf2bcSAndroid Build Coastguard Worker------------ 26*436bf2bcSAndroid Build Coastguard WorkerThe *tep_read_number()* function returns the integer in the byte order of 27*436bf2bcSAndroid Build Coastguard Workerthe current host. In case of an error, 0 is returned. 28*436bf2bcSAndroid Build Coastguard Worker 29*436bf2bcSAndroid Build Coastguard WorkerEXAMPLE 30*436bf2bcSAndroid Build Coastguard Worker------- 31*436bf2bcSAndroid Build Coastguard Worker[source,c] 32*436bf2bcSAndroid Build Coastguard Worker-- 33*436bf2bcSAndroid Build Coastguard Worker#include <event-parse.h> 34*436bf2bcSAndroid Build Coastguard Worker... 35*436bf2bcSAndroid Build Coastguard Workerstruct tep_handle *tep = tep_alloc(); 36*436bf2bcSAndroid Build Coastguard Worker... 37*436bf2bcSAndroid Build Coastguard Workervoid process_record(struct tep_record *record) 38*436bf2bcSAndroid Build Coastguard Worker{ 39*436bf2bcSAndroid Build Coastguard Worker int offset = 24; 40*436bf2bcSAndroid Build Coastguard Worker int data = tep_read_number(tep, record->data + offset, 4); 41*436bf2bcSAndroid Build Coastguard Worker 42*436bf2bcSAndroid Build Coastguard Worker /* Read the 4 bytes at the offset 24 of data as an integer */ 43*436bf2bcSAndroid Build Coastguard Worker} 44*436bf2bcSAndroid Build Coastguard Worker... 45*436bf2bcSAndroid Build Coastguard Worker-- 46*436bf2bcSAndroid Build Coastguard Worker 47*436bf2bcSAndroid Build Coastguard WorkerFILES 48*436bf2bcSAndroid Build Coastguard Worker----- 49*436bf2bcSAndroid Build Coastguard Worker[verse] 50*436bf2bcSAndroid Build Coastguard Worker-- 51*436bf2bcSAndroid Build Coastguard Worker*event-parse.h* 52*436bf2bcSAndroid Build Coastguard Worker Header file to include in order to have access to the library APIs. 53*436bf2bcSAndroid Build Coastguard Worker*-ltraceevent* 54*436bf2bcSAndroid Build Coastguard Worker Linker switch to add when building a program that uses the library. 55*436bf2bcSAndroid Build Coastguard Worker-- 56*436bf2bcSAndroid Build Coastguard Worker 57*436bf2bcSAndroid Build Coastguard WorkerSEE ALSO 58*436bf2bcSAndroid Build Coastguard Worker-------- 59*436bf2bcSAndroid Build Coastguard Worker*libtraceevent*(3), *trace-cmd*(1) 60*436bf2bcSAndroid Build Coastguard Worker 61*436bf2bcSAndroid Build Coastguard WorkerAUTHOR 62*436bf2bcSAndroid Build Coastguard Worker------ 63*436bf2bcSAndroid Build Coastguard Worker[verse] 64*436bf2bcSAndroid Build Coastguard Worker-- 65*436bf2bcSAndroid Build Coastguard Worker*Steven Rostedt* <[email protected]>, author of *libtraceevent*. 66*436bf2bcSAndroid Build Coastguard Worker*Tzvetomir Stoyanov* <[email protected]>, author of this man page. 67*436bf2bcSAndroid Build Coastguard Worker-- 68*436bf2bcSAndroid Build Coastguard WorkerREPORTING BUGS 69*436bf2bcSAndroid Build Coastguard Worker-------------- 70*436bf2bcSAndroid Build Coastguard WorkerReport bugs to <[email protected]> 71*436bf2bcSAndroid Build Coastguard Worker 72*436bf2bcSAndroid Build Coastguard WorkerLICENSE 73*436bf2bcSAndroid Build Coastguard Worker------- 74*436bf2bcSAndroid Build Coastguard Workerlibtraceevent is Free Software licensed under the GNU LGPL 2.1 75*436bf2bcSAndroid Build Coastguard Worker 76*436bf2bcSAndroid Build Coastguard WorkerRESOURCES 77*436bf2bcSAndroid Build Coastguard Worker--------- 78*436bf2bcSAndroid Build Coastguard Workerhttps://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/ 79