CExecution Safety - Ping + Execution Latency Guard for MQ L5 EAs
Info
The CExecution Safety - Ping + Execution Latency Guard for MQ L5 EAs is a Library for MetaTrader 5 that overview cexecutionsafety is a lightweight mql5 include class designed to protect expert advisors from executing trades under poor network or execution conditions. It measures two latency components live terminal ping and real wall-clock execution delay and blocks trade attempts when their combined value exceeds a configurable threshold.
Usage
This tool is typically used for enhancing chart analysis and decision making.
Platform
This Library works exclusively on MetaTrader 5 (both build 600+ and newer versions).
Setup
Place the downloaded file in MQL5/Libraries folder via File ? Open Data Folder in MetaTrader 5.
How to Install and Use CExecution Safety - Ping + Execution Latency Guard for MQ L5 EAs
1. Storage: Place library files in the MQL/Libraries directory to ensure they are accessible to your projects.
2. Implementation: Include the library in your code using the #import directive, ensuring you match the exact function names and parameters.
3. Compilation: Ensure the library is present in the directory before you compile your main EA or script, as the compiler links them during this phase.
4. Management: Keep libraries organized in sub-folders if you manage many custom functions to maintain a clean project structure.
Frequently Asked Questions
Q: What is a library file used for? A: Libraries store reusable code modules, allowing you to centralize common logic used by multiple EAs or indicators.
Q: Is a library executable? A: No, libraries are non-executable files containing functions; they must be imported into an EA, indicator, or script to function.
Q: Can I update a library while the platform is running? A: You should compile your EA or script after updating a library to ensure the latest code changes are integrated.
What this tool does
Overview CExecutionSafety is a lightweight MQL5 include class designed to protect Expert Advisors from executing trades under poor network or execution conditions.
Typical Use Case
This Library excels in automated trading and technical analysis on MetaTrader 5.
Compatible Platform & Setup
This Library works on MetaTrader 5. Place the file in the MQL5/Libraries folder and restart the terminal.
Description & Settings
Related: Inc ER D On Array - another powerful library for MetaTrader 5 traders.
OverviewCExecutionSafety is a lightweight MQL5 include class designed to protect Expert Advisors from executing trades under poor network or execution conditions. It measures two latency components live terminal ping and real wall-clock execution delay and blocks trade attempts when their combined value exceeds a configurable threshold.
Also recommended: Trading Signals Module Based on Delta Zig Zag Indicator - similar library with strong performance on MetaTrader 5.
The Problem It SolvesMost EAs execute blindly regardless of network conditions. A spike in ping or broker-side execution lag during a critical order can result in slippage, requotes, or failed fills. CExecutionSafety introduces a pre-trade safety gate that prevents execution when conditions are degraded.
How It Works
The class uses two data sources:
TERMINAL_PING_LAST:
reads the most recent ping recorded by MetaTerminal (in milliseconds)
RecordExecDelay():
accepts a wall-clock measurement you wrap around any CTrade operation
These two values are summed and compared against your configured threshold. If the combined latency exceeds the threshold, CheckExecutionSafety() returns false and prints a diagnostic log entry.
Disconnection Guard
When the terminal has no server contact, TERMINAL_PING_LAST returns -1. The class detects this and automatically returns false, preventing trade attempts on a disconnected terminal.
Integration Example
Include the file and instantiate the class in your EA:
Accessors
The following read-only accessors are available for dashboard display or external logic:
GetPingMs():
current terminal ping in ms
GetExecDelayMs():
last recorded execution delay in ms
GetCombinedMs():
ping + exec delay combined (returns 9999 if disconnected)
HasExecSample()
: true once at least one measurement has been recorded
GetThresholdMs():
configured safety threshold Changelog
v1.0
— Initial release
v1.1
— Guard macro renamed. %I64u format specifiers replaced with (string) casts
v1.2
— Init() return type changed void → bool. State reset on reinit to prevent stale samples
You may also like: Command - behavioral design pattern - excellent alternative for library users on MetaTrader 5.
⚠ Limitations & Risk Warning
- This tool is provided for educational and testing purposes only.
- Past performance does not guarantee future results.
- Trading involves substantial risk of loss. Use on a demo account first.
- Results may vary depending on market conditions, broker, and settings.
- We recommend thorough backtesting and forward testing before using with real funds.