| 1 | .\" Copyright (c) 2005-2008 David Carter <dcarter@arm4.org> and others. |
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| 2 | .\" All rights reserved. This program and the accompanying materials |
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| 3 | .\" are made available under the terms of the Eclipse Public License v1.0 |
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| 4 | .\" which accompanies this distribution, and is available at |
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| 5 | .\" http://www.eclipse.org/legal/epl-v10.html |
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| 6 | .TH "arm_update_transaction" 3 "August 2008" "arm4.org" "ARM 4 Programmer's Manual" |
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| 7 | .SH NAME |
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| 8 | arm_update_transaction \- get transaction status |
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| 9 | .SH SYNOPSIS |
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| 10 | .B #include <arm4.h> |
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| 11 | .sp |
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| 12 | \fBarm_error_t |
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| 13 | .br |
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| 14 | arm_update_transaction( |
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| 15 | .br |
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| 16 | const arm_tran_start_handle_t \fItran_handle\fB, |
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| 17 | .br |
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| 18 | const arm_int32_t \fIflags\fB, |
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| 19 | .br |
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| 20 | const arm_buffer4_t *\fIbuffer4\fB);\fR |
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| 21 | .SH DESCRIPTION |
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| 22 | \fBarm_update_transaction()\fR signals that a transaction is still processing. |
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| 23 | |
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| 24 | \fBarm_update_transaction()\fR is useful as a heartbeat. It is also used to pass additional data about a |
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| 25 | transaction. It can be called from any thread in the process that executed the |
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| 26 | \fBarm_start_transaction()\fR. |
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| 27 | |
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| 28 | \fIbuffer4\fR is a pointer to the user data buffer, if any. If the pointer is null (\fBARM_BUF4_NONE\fR), |
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| 29 | there is no buffer. The sub-buffer that might be used is |
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| 30 | \fBarm_subbuffer_metric_values_t\fR. |
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| 31 | |
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| 32 | \fIflags\fR contains 32-bit flags. No values are currently defined. The field should be zero |
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| 33 | (\fBARM_FLAG_NONE\fR). |
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| 34 | |
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| 35 | \fItran_handle\fR is a handle returned in an out parameter from an \fBarm_start_transaction()\fR call in the |
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| 36 | same process. |
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| 37 | |
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| 38 | .SH "RETURN VALUE" |
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| 39 | On success, the function returns \fBARM_SUCCESS\fR. A non-zero value indicates |
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| 40 | an error. |
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| 41 | .SH ERRORS |
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| 42 | If the return code is negative, an error occurred. If the return code is not negative, an error may |
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| 43 | or may not have occurred - the determination of what is an error and whether an error code is |
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| 44 | returned is at the discretion of the ARM implementation. The application can test the return code |
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| 45 | if it wants to provide its own error logging. |
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| 46 | |
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| 47 | The following errors are recognized by this implementation, but may not be portable to other implementations: |
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| 48 | |
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| 49 | .TP |
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| 50 | .B ARM_FAILURE_TRANSACTION_INACTIVE |
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| 51 | The \fItran_handle\fR refers to a transaction that is inactive. For example, an \fBarm_stop_transaction\fR |
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| 52 | call may have been made on that transaction. |
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| 53 | .TP |
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| 54 | .B ARM_FAILURE_TRANSACTION_BLOCKED |
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| 55 | The transaction has already been blocked by a previous call to \fBarm_block_transaction()\fR. |
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| 56 | .TP |
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| 57 | .B ARM_FAILURE_INTERNAL_ERROR |
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| 58 | An internal error has occurred that prevented the operation from completing. Check your |
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| 59 | system log for more details. |
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| 60 | .SH "CONFORMING TO" |
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| 61 | ARM Issue 4.0 C Language Bindings, Version 2 |
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| 62 | .SH EXAMPLE |
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| 63 | None. |
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| 64 | .SH "SEE ALSO" |
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| 65 | .BR arm_start_transaction (3), |
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| 66 | .BR arm_stop_transaction (3) |
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