Understanding gas price production in Ethereum agreements **
When working with Ethereum agreements, especially those that use the setting in line or interact with external application interfaces, such as Basprice () ', understanding the seemingly similar value can be crucial to precise implementation. In this article, we examinetx.gaspriceand assembly {gasprice: = gasprice ()} variables studying their differences and how they affect the behavior of the agreement.
tx.gasprice
The tx.gasprice variable is represented by the estimated price of the Ethereum network gas. This value is calculated by the Ethereum virtual machine (EVM) based on several factors, including:
- Network congestion
- Commercial gas threshold
- Implementation of the contract
When you call Gasprice () inside or as part of the contract entry code, it returns the price of this estimated gas.
Assembly {Gasprice: = Gasprice ()}
The word "Assembly" is used to define a function that does not accept arguments and has a return statement. When performing this function, calculates the estimated price of negotiation and provides its value to the local variable a "gas tube". This approach allows effective gas prices to access the "Gasprice ()" function of the EVM.
Why the difference is important
Here are some important reasons why understanding the difference between the two variables is essential:
* CACHE PERFORMANCE : Saving gas price estimates in a variable, you can optimize cache hits and reduce memory allocation times. On the other hand, if you store "Gasprice ()" directly within the internal configuration, you will always need to allocate the memory.
* Gas ​​calculations efficiency : Calculating gas prices from scratch always requires significant vision of performance due to EVM architecture. Cache these revisions you can improve the speed of contract contract and reduce delay.
Example Code
Below is an example of how you can use both variables in the contract:
Solidity
Pragman’s solidity ^0.8.0;
GasPricexampaame Comport
// Price of cache gas -Effective performance
UINT256 Private _GasPrices = 0;
Settings {
// Calculate estimated gas prices in cache
Call @bordasPrice () [] Memory Txgaite {
// Example: Calculate the estimated gas prices using the setting in line
Leave gastiprice: = gasprice ()
// Keep the result for an effective local variable
_GasPrices: = Gaspreses + (Gasprice – 1)
}
}
FUNCTION BORDGASPRICE () PUBLIC PURE REFUND (UINT256) {
// Example: Simulates the lack of cache by reducing gas prices from scratch
UINT256 BASPRICE = 10; // Estimated gas price
Settings {
// Calculate the estimated gas price using the EVM gas price estimation algorithm
GASPRICE: = gas (1, gas price)
}
Return Gasprice;
}
LASKNTAGESPRICE FUNCTION (UINT256 TXGASIES) CLEAN RETURNS (UINT256) {
// Example: Use the embedded configuration to store in cache and reuse previous estimates
UINT256 CACHEDGASPRICE = _GASPRICES; // Use the cache value if available
Settings {
// Calculate the estimated gas price using the value or direct calculation of the cache
Leave gasprice: = gas (txgasasit, 1)
// Define the calculated price of gas to an effective local variable
Popprice in cache storage: = (Cache PopPrice – 1) + Gasprice
}
recovery cache;
}
}
`
In this example, we show how the two variables can be effectively used in the Ethereum agreement.